18520785

素因数分解:

$3^3\times 5^1\times {\mathrm{137191}}^1$

素因数の和:137205

約数の個数: 16

約数和(自身を含む): 32926080

約数和(自身を除く): 14405295

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 137191, 411573, 685955, 1234719, 2057865, 3704157, 6173595, 18520785]

約数ペア:

[(1, 18520785), (3, 6173595), (5, 3704157), (9, 2057865), (15, 1234719), (27, 685955), (45, 411573), (135, 137191)]