639477855

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{205951}}^1$

素因数の和:205988

約数の個数: 32

約数和(自身を含む): 1186283520

約数和(自身を除く): 546805665

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 205951, 617853, 1029755, 1853559, 3089265, 4736873, 5560677, 9267795, 14210619, 23684365, 27803385, 42631857, 71053095, 127895571, 213159285, 639477855]

約数ペア:

[(1, 639477855), (3, 213159285), (5, 127895571), (9, 71053095), (15, 42631857), (23, 27803385), (27, 23684365), (45, 14210619), (69, 9267795), (115, 5560677), (135, 4736873), (207, 3089265), (345, 1853559), (621, 1029755), (1035, 617853), (3105, 205951)]