21031088

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101111}}^1$

素因数の和:101132

約数の個数: 20

約数和(自身を含む): 43882608

約数和(自身を除く): 22851520

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 101111, 202222, 404444, 808888, 1314443, 1617776, 2628886, 5257772, 10515544, 21031088]

約数ペア:

[(1, 21031088), (2, 10515544), (4, 5257772), (8, 2628886), (13, 1617776), (16, 1314443), (26, 808888), (52, 404444), (104, 202222), (208, 101111)]