21303664

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{11783}}^1$

素因数の和:11904

約数の個数: 20

約数和(自身を含む): 41644656

約数和(自身を除く): 20340992

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 11783, 23566, 47132, 94264, 188528, 1331479, 2662958, 5325916, 10651832, 21303664]

約数ペア:

[(1, 21303664), (2, 10651832), (4, 5325916), (8, 2662958), (16, 1331479), (113, 188528), (226, 94264), (452, 47132), (904, 23566), (1808, 11783)]