12855100

素因数分解:

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

素因数の和:128565

約数の個数: 18

約数和(自身を含む): 27895784

約数和(自身を除く): 15040684

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 128551, 257102, 514204, 642755, 1285510, 2571020, 3213775, 6427550, 12855100]

約数ペア:

[(1, 12855100), (2, 6427550), (4, 3213775), (5, 2571020), (10, 1285510), (20, 642755), (25, 514204), (50, 257102), (100, 128551)]