256340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1831}}^1$

素因数の和:1847

約数の個数: 24

約数和(自身を含む): 615552

約数和(自身を除く): 359212

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1831, 3662, 7324, 9155, 12817, 18310, 25634, 36620, 51268, 64085, 128170, 256340]

約数ペア:

[(1, 256340), (2, 128170), (4, 64085), (5, 51268), (7, 36620), (10, 25634), (14, 18310), (20, 12817), (28, 9155), (35, 7324), (70, 3662), (140, 1831)]