21331778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{6263}}^1$

素因数の和:6409

約数の個数: 16

約数和(自身を含む): 34727616

約数和(自身を除く): 13395838

約数列:

[1, 2, 13, 26, 131, 262, 1703, 3406, 6263, 12526, 81419, 162838, 820453, 1640906, 10665889, 21331778]

約数ペア:

[(1, 21331778), (2, 10665889), (13, 1640906), (26, 820453), (131, 162838), (262, 81419), (1703, 12526), (3406, 6263)]