252405

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 24

約数和(自身を含む): 449280

約数和(自身を除く): 196875

約数列:

[1, 3, 5, 9, 15, 45, 71, 79, 213, 237, 355, 395, 639, 711, 1065, 1185, 3195, 3555, 5609, 16827, 28045, 50481, 84135, 252405]

約数ペア:

[(1, 252405), (3, 84135), (5, 50481), (9, 28045), (15, 16827), (45, 5609), (71, 3555), (79, 3195), (213, 1185), (237, 1065), (355, 711), (395, 639)]