81915960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{863}}^1$

素因数の和:997

約数の個数: 128

約数和(自身を含む): 283668480

約数和(自身を除く): 201752520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 113, 120, 140, 168, 210, 226, 280, 339, 420, 452, 565, 678, 791, 840, 863, 904, 1130, 1356, 1582, 1695, 1726, 2260, 2373, 2589, 2712, 3164, 3390, 3452, 3955, 4315, 4520, 4746, 5178, 6041, 6328, 6780, 6904, 7910, 8630, 9492, 10356, 11865, 12082, 12945, 13560, 15820, 17260, 18123, 18984, 20712, 23730, 24164, 25890, 30205, 31640, 34520, 36246, 47460, 48328, 51780, 60410, 72492, 90615, 94920, 97519, 103560, 120820, 144984, 181230, 195038, 241640, 292557, 362460, 390076, 487595, 585114, 682633, 724920, 780152, 975190, 1170228, 1365266, 1462785, 1950380, 2047899, 2340456, 2730532, 2925570, 3413165, 3900760, 4095798, 5461064, 5851140, 6826330, 8191596, 10239495, 11702280, 13652660, 16383192, 20478990, 27305320, 40957980, 81915960]

約数ペア:

[(1, 81915960), (2, 40957980), (3, 27305320), (4, 20478990), (5, 16383192), (6, 13652660), (7, 11702280), (8, 10239495), (10, 8191596), (12, 6826330), (14, 5851140), (15, 5461064), (20, 4095798), (21, 3900760), (24, 3413165), (28, 2925570), (30, 2730532), (35, 2340456), (40, 2047899), (42, 1950380), (56, 1462785), (60, 1365266), (70, 1170228), (84, 975190), (105, 780152), (113, 724920), (120, 682633), (140, 585114), (168, 487595), (210, 390076), (226, 362460), (280, 292557), (339, 241640), (420, 195038), (452, 181230), (565, 144984), (678, 120820), (791, 103560), (840, 97519), (863, 94920), (904, 90615), (1130, 72492), (1356, 60410), (1582, 51780), (1695, 48328), (1726, 47460), (2260, 36246), (2373, 34520), (2589, 31640), (2712, 30205), (3164, 25890), (3390, 24164), (3452, 23730), (3955, 20712), (4315, 18984), (4520, 18123), (4746, 17260), (5178, 15820), (6041, 13560), (6328, 12945), (6780, 12082), (6904, 11865), (7910, 10356), (8630, 9492)]