21304431

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{4561}}^1$

素因数の和:4743

約数の個数: 16

約数和(自身を含む): 31751520

約数和(自身を除く): 10447089

約数列:

[1, 3, 9, 27, 173, 519, 1557, 4561, 4671, 13683, 41049, 123147, 789053, 2367159, 7101477, 21304431]

約数ペア:

[(1, 21304431), (3, 7101477), (9, 2367159), (27, 789053), (173, 123147), (519, 41049), (1557, 13683), (4561, 4671)]