20672800

素因数分解:

$2^5\times 5^2\times {\mathrm{25841}}^1$

素因数の和:25861

約数の個数: 36

約数和(自身を含む): 50469426

約数和(自身を除く): 29796626

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25841, 51682, 103364, 129205, 206728, 258410, 413456, 516820, 646025, 826912, 1033640, 1292050, 2067280, 2584100, 4134560, 5168200, 10336400, 20672800]

約数ペア:

[(1, 20672800), (2, 10336400), (4, 5168200), (5, 4134560), (8, 2584100), (10, 2067280), (16, 1292050), (20, 1033640), (25, 826912), (32, 646025), (40, 516820), (50, 413456), (80, 258410), (100, 206728), (160, 129205), (200, 103364), (400, 51682), (800, 25841)]