256725

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{163}}^1$

素因数の和:186

約数の個数: 36

約数和(自身を含む): 528736

約数和(自身を除く): 272011

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 163, 175, 225, 315, 489, 525, 815, 1141, 1467, 1575, 2445, 3423, 4075, 5705, 7335, 10269, 12225, 17115, 28525, 36675, 51345, 85575, 256725]

約数ペア:

[(1, 256725), (3, 85575), (5, 51345), (7, 36675), (9, 28525), (15, 17115), (21, 12225), (25, 10269), (35, 7335), (45, 5705), (63, 4075), (75, 3423), (105, 2445), (163, 1575), (175, 1467), (225, 1141), (315, 815), (489, 525)]