21278842

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11527}}^1$

素因数の和:11613

約数の個数: 16

約数和(自身を含む): 34860672

約数和(自身を除く): 13581830

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11527, 23054, 149851, 299702, 818417, 1636834, 10639421, 21278842]

約数ペア:

[(1, 21278842), (2, 10639421), (13, 1636834), (26, 818417), (71, 299702), (142, 149851), (923, 23054), (1846, 11527)]