51420400

素因数分解:

$2^4\times 5^2\times {\mathrm{128551}}^1$

素因数の和:128569

約数の個数: 30

約数和(自身を含む): 123538472

約数和(自身を除く): 72118072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 128551, 257102, 514204, 642755, 1028408, 1285510, 2056816, 2571020, 3213775, 5142040, 6427550, 10284080, 12855100, 25710200, 51420400]

約数ペア:

[(1, 51420400), (2, 25710200), (4, 12855100), (5, 10284080), (8, 6427550), (10, 5142040), (16, 3213775), (20, 2571020), (25, 2056816), (40, 1285510), (50, 1028408), (80, 642755), (100, 514204), (200, 257102), (400, 128551)]