72489640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{44201}}^1$

素因数の和:44253

約数の個数: 32

約数和(自身を含む): 167083560

約数和(自身を除く): 94593920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 44201, 88402, 176804, 221005, 353608, 442010, 884020, 1768040, 1812241, 3624482, 7248964, 9061205, 14497928, 18122410, 36244820, 72489640]

約数ペア:

[(1, 72489640), (2, 36244820), (4, 18122410), (5, 14497928), (8, 9061205), (10, 7248964), (20, 3624482), (40, 1812241), (41, 1768040), (82, 884020), (164, 442010), (205, 353608), (328, 221005), (410, 176804), (820, 88402), (1640, 44201)]