21058670

素因数分解:

$2^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{19681}}^1$

素因数の和:19795

約数の個数: 16

約数和(自身を含む): 38261808

約数和(自身を除く): 17203138

約数列:

[1, 2, 5, 10, 107, 214, 535, 1070, 19681, 39362, 98405, 196810, 2105867, 4211734, 10529335, 21058670]

約数ペア:

[(1, 21058670), (2, 10529335), (5, 4211734), (10, 2105867), (107, 196810), (214, 98405), (535, 39362), (1070, 19681)]