18471920

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3163}}^1$

素因数の和:3249

約数の個数: 40

約数和(自身を含む): 43549296

約数和(自身を除く): 25077376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3163, 5840, 6326, 12652, 15815, 25304, 31630, 50608, 63260, 126520, 230899, 253040, 461798, 923596, 1154495, 1847192, 2308990, 3694384, 4617980, 9235960, 18471920]

約数ペア:

[(1, 18471920), (2, 9235960), (4, 4617980), (5, 3694384), (8, 2308990), (10, 1847192), (16, 1154495), (20, 923596), (40, 461798), (73, 253040), (80, 230899), (146, 126520), (292, 63260), (365, 50608), (584, 31630), (730, 25304), (1168, 15815), (1460, 12652), (2920, 6326), (3163, 5840)]