71318680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43487}}^1$

素因数の和:43539

約数の個数: 32

約数和(自身を含む): 164384640

約数和(自身を除く): 93065960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43487, 86974, 173948, 217435, 347896, 434870, 869740, 1739480, 1782967, 3565934, 7131868, 8914835, 14263736, 17829670, 35659340, 71318680]

約数ペア:

[(1, 71318680), (2, 35659340), (4, 17829670), (5, 14263736), (8, 8914835), (10, 7131868), (20, 3565934), (40, 1782967), (41, 1739480), (82, 869740), (164, 434870), (205, 347896), (328, 217435), (410, 173948), (820, 86974), (1640, 43487)]