255290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{521}}^1$

素因数の和:542

約数の個数: 24

約数和(自身を含む): 535572

約数和(自身を除く): 280282

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 521, 1042, 2605, 3647, 5210, 7294, 18235, 25529, 36470, 51058, 127645, 255290]

約数ペア:

[(1, 255290), (2, 127645), (5, 51058), (7, 36470), (10, 25529), (14, 18235), (35, 7294), (49, 5210), (70, 3647), (98, 2605), (245, 1042), (490, 521)]