399195

素因数分解:

$3^3\times 5^1\times {\mathrm{2957}}^1$

素因数の和:2971

約数の個数: 16

約数和(自身を含む): 709920

約数和(自身を除く): 310725

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 2957, 8871, 14785, 26613, 44355, 79839, 133065, 399195]

約数ペア:

[(1, 399195), (3, 133065), (5, 79839), (9, 44355), (15, 26613), (27, 14785), (45, 8871), (135, 2957)]