21162931390

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{5277539}}^1$

素因数の和:5277947

約数の個数: 16

約数和(自身を含む): 38188279440

約数和(自身を除く): 17025348050

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 5277539, 10555078, 26387695, 52775390, 2116293139, 4232586278, 10581465695, 21162931390]

約数ペア:

[(1, 21162931390), (2, 10581465695), (5, 4232586278), (10, 2116293139), (401, 52775390), (802, 26387695), (2005, 10555078), (4010, 5277539)]