20059865

素因数分解:

$5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1997}}^1$

素因数の和:2057

約数の個数: 24

約数和(自身を含む): 28699272

約数和(自身を除く): 8639407

約数列:

[1, 5, 7, 35, 41, 49, 205, 245, 287, 1435, 1997, 2009, 9985, 10045, 13979, 69895, 81877, 97853, 409385, 489265, 573139, 2865695, 4011973, 20059865]

約数ペア:

[(1, 20059865), (5, 4011973), (7, 2865695), (35, 573139), (41, 489265), (49, 409385), (205, 97853), (245, 81877), (287, 69895), (1435, 13979), (1997, 10045), (2009, 9985)]