21391276

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{90641}}^1$

素因数の和:90704

約数の個数: 12

約数和(自身を含む): 38069640

約数和(自身を除く): 16678364

約数列:

[1, 2, 4, 59, 118, 236, 90641, 181282, 362564, 5347819, 10695638, 21391276]

約数ペア:

[(1, 21391276), (2, 10695638), (4, 5347819), (59, 362564), (118, 181282), (236, 90641)]