21028567

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1459}}^1$

素因数の和:1566

約数の個数: 16

約数和(自身を含む): 25228800

約数和(自身を除く): 4200233

約数列:

[1, 7, 29, 71, 203, 497, 1459, 2059, 10213, 14413, 42311, 103589, 296177, 725123, 3004081, 21028567]

約数ペア:

[(1, 21028567), (7, 3004081), (29, 725123), (71, 296177), (203, 103589), (497, 42311), (1459, 14413), (2059, 10213)]