20165593640

素因数分解:

$2^3\times 5^1\times {\mathrm{504139841}}^1$

素因数の和:504139852

約数の個数: 16

約数和(自身を含む): 45372585780

約数和(自身を除く): 25206992140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504139841, 1008279682, 2016559364, 2520699205, 4033118728, 5041398410, 10082796820, 20165593640]

約数ペア:

[(1, 20165593640), (2, 10082796820), (4, 5041398410), (5, 4033118728), (8, 2520699205), (10, 2016559364), (20, 1008279682), (40, 504139841)]