21456604

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{412627}}^1$

素因数の和:412644

約数の個数: 12

約数和(自身を含む): 40437544

約数和(自身を除く): 18980940

約数列:

[1, 2, 4, 13, 26, 52, 412627, 825254, 1650508, 5364151, 10728302, 21456604]

約数ペア:

[(1, 21456604), (2, 10728302), (4, 5364151), (13, 1650508), (26, 825254), (52, 412627)]