19981857840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{2671}}^1$

素因数の和:2828

約数の個数: 320

約数和(自身を含む): 72966377472

約数和(自身を除く): 52984519632

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 61, 70, 73, 80, 84, 105, 112, 120, 122, 140, 146, 168, 183, 210, 219, 240, 244, 280, 292, 305, 336, 365, 366, 420, 427, 438, 488, 511, 560, 584, 610, 730, 732, 840, 854, 876, 915, 976, 1022, 1095, 1168, 1220, 1281, 1460, 1464, 1533, 1680, 1708, 1752, 1830, 2044, 2135, 2190, 2440, 2555, 2562, 2671, 2920, 2928, 3066, 3416, 3504, 3660, 4088, 4270, 4380, 4453, 4880, 5110, 5124, 5342, 5840, 6132, 6405, 6832, 7320, 7665, 8013, 8176, 8540, 8760, 8906, 10220, 10248, 10684, 12264, 12810, 13355, 13359, 14640, 15330, 16026, 17080, 17520, 17812, 18697, 20440, 20496, 21368, 22265, 24528, 25620, 26710, 26718, 30660, 31171, 32052, 34160, 35624, 37394, 40065, 40880, 42736, 44530, 51240, 53420, 53436, 56091, 61320, 62342, 64104, 66795, 71248, 74788, 80130, 89060, 93485, 93513, 102480, 106840, 106872, 112182, 122640, 124684, 128208, 133590, 149576, 155855, 160260, 162931, 178120, 186970, 187026, 194983, 213680, 213744, 224364, 249368, 267180, 280455, 299152, 311710, 320520, 325862, 356240, 373940, 374052, 389966, 448728, 467565, 488793, 498736, 534360, 560910, 584949, 623420, 641040, 651724, 747880, 748104, 779932, 814655, 897456, 935130, 974915, 977586, 1068720, 1121820, 1140517, 1169898, 1246840, 1303448, 1364881, 1495760, 1496208, 1559864, 1629310, 1870260, 1949830, 1955172, 2243640, 2281034, 2339796, 2443965, 2493680, 2606896, 2729762, 2924745, 3119728, 3258620, 3421551, 3740520, 3899660, 3910344, 4094643, 4487280, 4562068, 4679592, 4887930, 5459524, 5702585, 5849490, 6517240, 6824405, 6843102, 7481040, 7799320, 7820688, 8189286, 9124136, 9359184, 9775860, 10919048, 11405170, 11698980, 11893963, 13034480, 13648810, 13686204, 15598640, 16378572, 17107755, 18248272, 19551720, 20473215, 21838096, 22810340, 23397960, 23787926, 27297620, 27372408, 32757144, 34215510, 35681889, 39103440, 40946430, 45620680, 46795920, 47575852, 54595240, 54744816, 59469815, 65514288, 68431020, 71363778, 81892860, 83257741, 91241360, 95151704, 109190480, 118939630, 136862040, 142727556, 163785720, 166515482, 178409445, 190303408, 237879260, 249773223, 273724080, 285455112, 327571440, 333030964, 356818890, 416288705, 475758520, 499546446, 570910224, 666061928, 713637780, 832577410, 951517040, 999092892, 1248866115, 1332123856, 1427275560, 1665154820, 1998185784, 2497732230, 2854551120, 3330309640, 3996371568, 4995464460, 6660619280, 9990928920, 19981857840]

約数ペア:

[(1, 19981857840), (2, 9990928920), (3, 6660619280), (4, 4995464460), (5, 3996371568), (6, 3330309640), (7, 2854551120), (8, 2497732230), (10, 1998185784), (12, 1665154820), (14, 1427275560), (15, 1332123856), (16, 1248866115), (20, 999092892), (21, 951517040), (24, 832577410), (28, 713637780), (30, 666061928), (35, 570910224), (40, 499546446), (42, 475758520), (48, 416288705), (56, 356818890), (60, 333030964), (61, 327571440), (70, 285455112), (73, 273724080), (80, 249773223), (84, 237879260), (105, 190303408), (112, 178409445), (120, 166515482), (122, 163785720), (140, 142727556), (146, 136862040), (168, 118939630), (183, 109190480), (210, 95151704), (219, 91241360), (240, 83257741), (244, 81892860), (280, 71363778), (292, 68431020), (305, 65514288), (336, 59469815), (365, 54744816), (366, 54595240), (420, 47575852), (427, 46795920), (438, 45620680), (488, 40946430), (511, 39103440), (560, 35681889), (584, 34215510), (610, 32757144), (730, 27372408), (732, 27297620), (840, 23787926), (854, 23397960), (876, 22810340), (915, 21838096), (976, 20473215), (1022, 19551720), (1095, 18248272), (1168, 17107755), (1220, 16378572), (1281, 15598640), (1460, 13686204), (1464, 13648810), (1533, 13034480), (1680, 11893963), (1708, 11698980), (1752, 11405170), (1830, 10919048), (2044, 9775860), (2135, 9359184), (2190, 9124136), (2440, 8189286), (2555, 7820688), (2562, 7799320), (2671, 7481040), (2920, 6843102), (2928, 6824405), (3066, 6517240), (3416, 5849490), (3504, 5702585), (3660, 5459524), (4088, 4887930), (4270, 4679592), (4380, 4562068), (4453, 4487280), (4880, 4094643), (5110, 3910344), (5124, 3899660), (5342, 3740520), (5840, 3421551), (6132, 3258620), (6405, 3119728), (6832, 2924745), (7320, 2729762), (7665, 2606896), (8013, 2493680), (8176, 2443965), (8540, 2339796), (8760, 2281034), (8906, 2243640), (10220, 1955172), (10248, 1949830), (10684, 1870260), (12264, 1629310), (12810, 1559864), (13355, 1496208), (13359, 1495760), (14640, 1364881), (15330, 1303448), (16026, 1246840), (17080, 1169898), (17520, 1140517), (17812, 1121820), (18697, 1068720), (20440, 977586), (20496, 974915), (21368, 935130), (22265, 897456), (24528, 814655), (25620, 779932), (26710, 748104), (26718, 747880), (30660, 651724), (31171, 641040), (32052, 623420), (34160, 584949), (35624, 560910), (37394, 534360), (40065, 498736), (40880, 488793), (42736, 467565), (44530, 448728), (51240, 389966), (53420, 374052), (53436, 373940), (56091, 356240), (61320, 325862), (62342, 320520), (64104, 311710), (66795, 299152), (71248, 280455), (74788, 267180), (80130, 249368), (89060, 224364), (93485, 213744), (93513, 213680), (102480, 194983), (106840, 187026), (106872, 186970), (112182, 178120), (122640, 162931), (124684, 160260), (128208, 155855), (133590, 149576)]