21589521

素因数分解:

$3^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 29377920

約数和(自身を除く): 7788399

約数列:

[1, 3, 103, 109, 309, 327, 641, 1923, 11227, 33681, 66023, 69869, 198069, 209607, 7196507, 21589521]

約数ペア:

[(1, 21589521), (3, 7196507), (103, 209607), (109, 198069), (309, 69869), (327, 66023), (641, 33681), (1923, 11227)]