12940100

素因数分解:

$2^2\times 5^2\times {\mathrm{129401}}^1$

素因数の和:129415

約数の個数: 18

約数和(自身を含む): 28080234

約数和(自身を除く): 15140134

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 129401, 258802, 517604, 647005, 1294010, 2588020, 3235025, 6470050, 12940100]

約数ペア:

[(1, 12940100), (2, 6470050), (4, 3235025), (5, 2588020), (10, 1294010), (20, 647005), (25, 517604), (50, 258802), (100, 129401)]