21170307

素因数分解:

$3^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:854

約数の個数: 16

約数和(自身を含む): 28812960

約数和(自身を除く): 7642653

約数列:

[1, 3, 101, 109, 303, 327, 641, 1923, 11009, 33027, 64741, 69869, 194223, 209607, 7056769, 21170307]

約数ペア:

[(1, 21170307), (3, 7056769), (101, 209607), (109, 194223), (303, 69869), (327, 64741), (641, 33027), (1923, 11009)]