21247252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{3967}}^1$

素因数の和:4087

約数の個数: 24

約数和(自身を含む): 40441856

約数和(自身を除く): 19194604

約数列:

[1, 2, 4, 13, 26, 52, 103, 206, 412, 1339, 2678, 3967, 5356, 7934, 15868, 51571, 103142, 206284, 408601, 817202, 1634404, 5311813, 10623626, 21247252]

約数ペア:

[(1, 21247252), (2, 10623626), (4, 5311813), (13, 1634404), (26, 817202), (52, 408601), (103, 206284), (206, 103142), (412, 51571), (1339, 15868), (2678, 7934), (3967, 5356)]