78863960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3967}}^1$

素因数の和:4056

約数の個数: 64

約数和(自身を含む): 205701120

約数和(自身を除く): 126837160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1988, 2485, 2840, 3967, 3976, 4970, 7934, 9940, 15868, 19835, 19880, 27769, 31736, 39670, 55538, 79340, 111076, 138845, 158680, 222152, 277690, 281657, 555380, 563314, 1110760, 1126628, 1408285, 1971599, 2253256, 2816570, 3943198, 5633140, 7886396, 9857995, 11266280, 15772792, 19715990, 39431980, 78863960]

約数ペア:

[(1, 78863960), (2, 39431980), (4, 19715990), (5, 15772792), (7, 11266280), (8, 9857995), (10, 7886396), (14, 5633140), (20, 3943198), (28, 2816570), (35, 2253256), (40, 1971599), (56, 1408285), (70, 1126628), (71, 1110760), (140, 563314), (142, 555380), (280, 281657), (284, 277690), (355, 222152), (497, 158680), (568, 138845), (710, 111076), (994, 79340), (1420, 55538), (1988, 39670), (2485, 31736), (2840, 27769), (3967, 19880), (3976, 19835), (4970, 15868), (7934, 9940)]