21617170

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3881}}^1$

素因数の和:4445

約数の個数: 16

約数和(自身を含む): 38990808

約数和(自身を除く): 17373638

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 3881, 5570, 7762, 19405, 38810, 2161717, 4323434, 10808585, 21617170]

約数ペア:

[(1, 21617170), (2, 10808585), (5, 4323434), (10, 2161717), (557, 38810), (1114, 19405), (2785, 7762), (3881, 5570)]