320401215

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{51971}}^1$

素因数の和:52119

約数の個数: 24

約数和(自身を含む): 559426608

約数和(自身を除く): 239025393

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 6165, 51971, 155913, 259855, 467739, 779565, 2338695, 7120027, 21360081, 35600135, 64080243, 106800405, 320401215]

約数ペア:

[(1, 320401215), (3, 106800405), (5, 64080243), (9, 35600135), (15, 21360081), (45, 7120027), (137, 2338695), (411, 779565), (685, 467739), (1233, 259855), (2055, 155913), (6165, 51971)]