21381310

素因数分解:

$2^1\times 5^1\times {\mathrm{1361}}^1\times {\mathrm{1571}}^1$

素因数の和:2939

約数の個数: 16

約数和(自身を含む): 38539152

約数和(自身を除く): 17157842

約数列:

[1, 2, 5, 10, 1361, 1571, 2722, 3142, 6805, 7855, 13610, 15710, 2138131, 4276262, 10690655, 21381310]

約数ペア:

[(1, 21381310), (2, 10690655), (5, 4276262), (10, 2138131), (1361, 15710), (1571, 13610), (2722, 7855), (3142, 6805)]