639825

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 1116000

約数和(自身を除く): 476175

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 449, 475, 1347, 1425, 2245, 6735, 8531, 11225, 25593, 33675, 42655, 127965, 213275, 639825]

約数ペア:

[(1, 639825), (3, 213275), (5, 127965), (15, 42655), (19, 33675), (25, 25593), (57, 11225), (75, 8531), (95, 6735), (285, 2245), (449, 1425), (475, 1347)]