21000591353

素因数分解:

$7^2\times {\mathrm{641}}^1\times {\mathrm{668617}}^1$

素因数の和:669272

約数の個数: 12

約数和(自身を含む): 24467407092

約数和(自身を除く): 3466815739

約数列:

[1, 7, 49, 641, 4487, 31409, 668617, 4680319, 32762233, 428583497, 3000084479, 21000591353]

約数ペア:

[(1, 21000591353), (7, 3000084479), (49, 428583497), (641, 32762233), (4487, 4680319), (31409, 668617)]