21185510

素因数分解:

$2^1\times 5^1\times {\mathrm{1231}}^1\times {\mathrm{1721}}^1$

素因数の和:2959

約数の個数: 16

約数和(自身を含む): 38187072

約数和(自身を除く): 17001562

約数列:

[1, 2, 5, 10, 1231, 1721, 2462, 3442, 6155, 8605, 12310, 17210, 2118551, 4237102, 10592755, 21185510]

約数ペア:

[(1, 21185510), (2, 10592755), (5, 4237102), (10, 2118551), (1231, 17210), (1721, 12310), (2462, 8605), (3442, 6155)]