620055

素因数分解:

$3^4\times 5^1\times {\mathrm{1531}}^1$

素因数の和:1548

約数の個数: 20

約数和(自身を含む): 1112232

約数和(自身を除く): 492177

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 1531, 4593, 7655, 13779, 22965, 41337, 68895, 124011, 206685, 620055]

約数ペア:

[(1, 620055), (3, 206685), (5, 124011), (9, 68895), (15, 41337), (27, 22965), (45, 13779), (81, 7655), (135, 4593), (405, 1531)]