16327280

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{499}}^1$

素因数の和:921

約数の個数: 40

約数和(自身を含む): 38130000

約数和(自身を除く): 21802720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 499, 818, 998, 1636, 1996, 2045, 2495, 3272, 3992, 4090, 4990, 6544, 7984, 8180, 9980, 16360, 19960, 32720, 39920, 204091, 408182, 816364, 1020455, 1632728, 2040910, 3265456, 4081820, 8163640, 16327280]

約数ペア:

[(1, 16327280), (2, 8163640), (4, 4081820), (5, 3265456), (8, 2040910), (10, 1632728), (16, 1020455), (20, 816364), (40, 408182), (80, 204091), (409, 39920), (499, 32720), (818, 19960), (998, 16360), (1636, 9980), (1996, 8180), (2045, 7984), (2495, 6544), (3272, 4990), (3992, 4090)]