21259484

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{129631}}^1$

素因数の和:129676

約数の個数: 12

約数和(自身を含む): 38111808

約数和(自身を除く): 16852324

約数列:

[1, 2, 4, 41, 82, 164, 129631, 259262, 518524, 5314871, 10629742, 21259484]

約数ペア:

[(1, 21259484), (2, 10629742), (4, 5314871), (41, 518524), (82, 259262), (164, 129631)]