3990555

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1331

約数の個数: 24

約数和(自身を含む): 7020000

約数和(自身を除く): 3029445

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 1249, 3195, 3747, 6245, 11241, 18735, 56205, 88679, 266037, 443395, 798111, 1330185, 3990555]

約数ペア:

[(1, 3990555), (3, 1330185), (5, 798111), (9, 443395), (15, 266037), (45, 88679), (71, 56205), (213, 18735), (355, 11241), (639, 6245), (1065, 3747), (1249, 3195)]