21262390

素因数分解:

$2^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{4261}}^1$

素因数の和:4767

約数の個数: 16

約数和(自身を含む): 38358000

約数和(自身を除く): 17095610

約数列:

[1, 2, 5, 10, 499, 998, 2495, 4261, 4990, 8522, 21305, 42610, 2126239, 4252478, 10631195, 21262390]

約数ペア:

[(1, 21262390), (2, 10631195), (5, 4252478), (10, 2126239), (499, 42610), (998, 21305), (2495, 8522), (4261, 4990)]