81616920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{73}}^1$

素因数の和:127

約数の個数: 256

約数和(自身を含む): 312007680

約数和(自身を除く): 230390760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 73, 77, 84, 88, 105, 110, 120, 121, 132, 140, 146, 154, 165, 168, 210, 219, 220, 231, 242, 264, 280, 292, 308, 330, 363, 365, 385, 420, 438, 440, 462, 484, 511, 584, 605, 616, 660, 726, 730, 770, 803, 840, 847, 876, 924, 968, 1022, 1095, 1155, 1210, 1320, 1331, 1452, 1460, 1533, 1540, 1606, 1694, 1752, 1815, 1848, 2044, 2190, 2310, 2409, 2420, 2541, 2555, 2662, 2904, 2920, 3066, 3080, 3212, 3388, 3630, 3993, 4015, 4088, 4235, 4380, 4620, 4818, 4840, 5082, 5110, 5324, 5621, 6132, 6424, 6655, 6776, 7260, 7665, 7986, 8030, 8470, 8760, 8833, 9240, 9317, 9636, 10164, 10220, 10648, 11242, 12045, 12264, 12705, 13310, 14520, 15330, 15972, 16060, 16863, 16940, 17666, 18634, 19272, 19965, 20328, 20440, 22484, 24090, 25410, 26499, 26620, 27951, 28105, 30660, 31944, 32120, 33726, 33880, 35332, 37268, 39930, 44165, 44968, 46585, 48180, 50820, 52998, 53240, 55902, 56210, 61320, 61831, 67452, 70664, 74536, 79860, 84315, 88330, 93170, 96360, 97163, 101640, 105996, 111804, 112420, 123662, 132495, 134904, 139755, 159720, 168630, 176660, 185493, 186340, 194326, 211992, 223608, 224840, 247324, 264990, 279510, 291489, 309155, 337260, 353320, 370986, 372680, 388652, 485815, 494648, 529980, 559020, 582978, 618310, 674520, 680141, 741972, 777304, 927465, 971630, 1059960, 1118040, 1165956, 1236620, 1360282, 1457445, 1483944, 1854930, 1943260, 2040423, 2331912, 2473240, 2720564, 2914890, 3400705, 3709860, 3886520, 4080846, 5441128, 5829780, 6801410, 7419720, 8161692, 10202115, 11659560, 13602820, 16323384, 20404230, 27205640, 40808460, 81616920]

約数ペア:

[(1, 81616920), (2, 40808460), (3, 27205640), (4, 20404230), (5, 16323384), (6, 13602820), (7, 11659560), (8, 10202115), (10, 8161692), (11, 7419720), (12, 6801410), (14, 5829780), (15, 5441128), (20, 4080846), (21, 3886520), (22, 3709860), (24, 3400705), (28, 2914890), (30, 2720564), (33, 2473240), (35, 2331912), (40, 2040423), (42, 1943260), (44, 1854930), (55, 1483944), (56, 1457445), (60, 1360282), (66, 1236620), (70, 1165956), (73, 1118040), (77, 1059960), (84, 971630), (88, 927465), (105, 777304), (110, 741972), (120, 680141), (121, 674520), (132, 618310), (140, 582978), (146, 559020), (154, 529980), (165, 494648), (168, 485815), (210, 388652), (219, 372680), (220, 370986), (231, 353320), (242, 337260), (264, 309155), (280, 291489), (292, 279510), (308, 264990), (330, 247324), (363, 224840), (365, 223608), (385, 211992), (420, 194326), (438, 186340), (440, 185493), (462, 176660), (484, 168630), (511, 159720), (584, 139755), (605, 134904), (616, 132495), (660, 123662), (726, 112420), (730, 111804), (770, 105996), (803, 101640), (840, 97163), (847, 96360), (876, 93170), (924, 88330), (968, 84315), (1022, 79860), (1095, 74536), (1155, 70664), (1210, 67452), (1320, 61831), (1331, 61320), (1452, 56210), (1460, 55902), (1533, 53240), (1540, 52998), (1606, 50820), (1694, 48180), (1752, 46585), (1815, 44968), (1848, 44165), (2044, 39930), (2190, 37268), (2310, 35332), (2409, 33880), (2420, 33726), (2541, 32120), (2555, 31944), (2662, 30660), (2904, 28105), (2920, 27951), (3066, 26620), (3080, 26499), (3212, 25410), (3388, 24090), (3630, 22484), (3993, 20440), (4015, 20328), (4088, 19965), (4235, 19272), (4380, 18634), (4620, 17666), (4818, 16940), (4840, 16863), (5082, 16060), (5110, 15972), (5324, 15330), (5621, 14520), (6132, 13310), (6424, 12705), (6655, 12264), (6776, 12045), (7260, 11242), (7665, 10648), (7986, 10220), (8030, 10164), (8470, 9636), (8760, 9317), (8833, 9240)]