20297800

素因数分解:

$2^3\times 5^2\times {\mathrm{101489}}^1$

素因数の和:101505

約数の個数: 24

約数和(自身を含む): 47192850

約数和(自身を除く): 26895050

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 101489, 202978, 405956, 507445, 811912, 1014890, 2029780, 2537225, 4059560, 5074450, 10148900, 20297800]

約数ペア:

[(1, 20297800), (2, 10148900), (4, 5074450), (5, 4059560), (8, 2537225), (10, 2029780), (20, 1014890), (25, 811912), (40, 507445), (50, 405956), (100, 202978), (200, 101489)]