80819920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53171}}^1$

素因数の和:53203

約数の個数: 40

約数和(自身を含む): 197799840

約数和(自身を除く): 116979920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 53171, 106342, 212684, 265855, 425368, 531710, 850736, 1010249, 1063420, 2020498, 2126840, 4040996, 4253680, 5051245, 8081992, 10102490, 16163984, 20204980, 40409960, 80819920]

約数ペア:

[(1, 80819920), (2, 40409960), (4, 20204980), (5, 16163984), (8, 10102490), (10, 8081992), (16, 5051245), (19, 4253680), (20, 4040996), (38, 2126840), (40, 2020498), (76, 1063420), (80, 1010249), (95, 850736), (152, 531710), (190, 425368), (304, 265855), (380, 212684), (760, 106342), (1520, 53171)]