81895320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:359

約数の個数: 256

約数和(自身を含む): 310464000

約数和(自身を除く): 228568680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 19, 20, 24, 26, 27, 30, 36, 38, 39, 40, 45, 52, 54, 57, 60, 65, 72, 76, 78, 90, 95, 104, 108, 114, 117, 120, 130, 135, 152, 156, 171, 180, 190, 195, 216, 228, 234, 247, 260, 270, 285, 307, 312, 342, 351, 360, 380, 390, 456, 468, 494, 513, 520, 540, 570, 585, 614, 684, 702, 741, 760, 780, 855, 921, 936, 988, 1026, 1080, 1140, 1170, 1228, 1235, 1368, 1404, 1482, 1535, 1560, 1710, 1755, 1842, 1976, 2052, 2223, 2280, 2340, 2456, 2470, 2565, 2763, 2808, 2964, 3070, 3420, 3510, 3684, 3705, 3991, 4104, 4446, 4605, 4680, 4940, 5130, 5526, 5833, 5928, 6140, 6669, 6840, 7020, 7368, 7410, 7982, 8289, 8892, 9210, 9880, 10260, 11052, 11115, 11666, 11973, 12280, 13338, 13815, 14040, 14820, 15964, 16578, 17499, 17784, 18420, 19955, 20520, 22104, 22230, 23332, 23946, 26676, 27630, 29165, 29640, 31928, 33156, 33345, 34998, 35919, 36840, 39910, 41445, 44460, 46664, 47892, 52497, 53352, 55260, 58330, 59865, 66312, 66690, 69996, 71838, 75829, 79820, 82890, 87495, 88920, 95784, 104994, 107757, 110520, 116660, 119730, 133380, 139992, 143676, 151658, 157491, 159640, 165780, 174990, 179595, 209988, 215514, 227487, 233320, 239460, 262485, 266760, 287352, 303316, 314982, 331560, 349980, 359190, 379145, 419976, 431028, 454974, 478920, 524970, 538785, 606632, 629964, 682461, 699960, 718380, 758290, 787455, 862056, 909948, 1049940, 1077570, 1137435, 1259928, 1364922, 1436760, 1516580, 1574910, 1819896, 2047383, 2099880, 2155140, 2274870, 2729844, 3033160, 3149820, 3412305, 4094766, 4310280, 4549740, 5459688, 6299640, 6824610, 8189532, 9099480, 10236915, 13649220, 16379064, 20473830, 27298440, 40947660, 81895320]

約数ペア:

[(1, 81895320), (2, 40947660), (3, 27298440), (4, 20473830), (5, 16379064), (6, 13649220), (8, 10236915), (9, 9099480), (10, 8189532), (12, 6824610), (13, 6299640), (15, 5459688), (18, 4549740), (19, 4310280), (20, 4094766), (24, 3412305), (26, 3149820), (27, 3033160), (30, 2729844), (36, 2274870), (38, 2155140), (39, 2099880), (40, 2047383), (45, 1819896), (52, 1574910), (54, 1516580), (57, 1436760), (60, 1364922), (65, 1259928), (72, 1137435), (76, 1077570), (78, 1049940), (90, 909948), (95, 862056), (104, 787455), (108, 758290), (114, 718380), (117, 699960), (120, 682461), (130, 629964), (135, 606632), (152, 538785), (156, 524970), (171, 478920), (180, 454974), (190, 431028), (195, 419976), (216, 379145), (228, 359190), (234, 349980), (247, 331560), (260, 314982), (270, 303316), (285, 287352), (307, 266760), (312, 262485), (342, 239460), (351, 233320), (360, 227487), (380, 215514), (390, 209988), (456, 179595), (468, 174990), (494, 165780), (513, 159640), (520, 157491), (540, 151658), (570, 143676), (585, 139992), (614, 133380), (684, 119730), (702, 116660), (741, 110520), (760, 107757), (780, 104994), (855, 95784), (921, 88920), (936, 87495), (988, 82890), (1026, 79820), (1080, 75829), (1140, 71838), (1170, 69996), (1228, 66690), (1235, 66312), (1368, 59865), (1404, 58330), (1482, 55260), (1535, 53352), (1560, 52497), (1710, 47892), (1755, 46664), (1842, 44460), (1976, 41445), (2052, 39910), (2223, 36840), (2280, 35919), (2340, 34998), (2456, 33345), (2470, 33156), (2565, 31928), (2763, 29640), (2808, 29165), (2964, 27630), (3070, 26676), (3420, 23946), (3510, 23332), (3684, 22230), (3705, 22104), (3991, 20520), (4104, 19955), (4446, 18420), (4605, 17784), (4680, 17499), (4940, 16578), (5130, 15964), (5526, 14820), (5833, 14040), (5928, 13815), (6140, 13338), (6669, 12280), (6840, 11973), (7020, 11666), (7368, 11115), (7410, 11052), (7982, 10260), (8289, 9880), (8892, 9210)]