21007359

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{137303}}^1$

素因数の和:137326

約数の個数: 12

約数和(自身を含む): 32129136

約数和(自身を除く): 11121777

約数列:

[1, 3, 9, 17, 51, 153, 137303, 411909, 1235727, 2334151, 7002453, 21007359]

約数ペア:

[(1, 21007359), (3, 7002453), (9, 2334151), (17, 1235727), (51, 411909), (153, 137303)]