20312800

素因数分解:

$2^5\times 5^2\times {\mathrm{25391}}^1$

素因数の和:25411

約数の個数: 36

約数和(自身を含む): 49590576

約数和(自身を除く): 29277776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25391, 50782, 101564, 126955, 203128, 253910, 406256, 507820, 634775, 812512, 1015640, 1269550, 2031280, 2539100, 4062560, 5078200, 10156400, 20312800]

約数ペア:

[(1, 20312800), (2, 10156400), (4, 5078200), (5, 4062560), (8, 2539100), (10, 2031280), (16, 1269550), (20, 1015640), (25, 812512), (32, 634775), (40, 507820), (50, 406256), (80, 253910), (100, 203128), (160, 126955), (200, 101564), (400, 50782), (800, 25391)]