15221385

素因数分解:

$3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{823}}^1$

素因数の和:974

約数の個数: 32

約数和(自身を含む): 27290880

約数和(自身を除く): 12069495

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 137, 411, 685, 823, 1233, 2055, 2469, 3699, 4115, 6165, 7407, 12345, 18495, 22221, 37035, 111105, 112751, 338253, 563755, 1014759, 1691265, 3044277, 5073795, 15221385]

約数ペア:

[(1, 15221385), (3, 5073795), (5, 3044277), (9, 1691265), (15, 1014759), (27, 563755), (45, 338253), (135, 112751), (137, 111105), (411, 37035), (685, 22221), (823, 18495), (1233, 12345), (2055, 7407), (2469, 6165), (3699, 4115)]