20396685

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79987}}^1$

素因数の和:80012

約数の個数: 16

約数和(自身を含む): 34554816

約数和(自身を除く): 14158131

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 79987, 239961, 399935, 1199805, 1359779, 4079337, 6798895, 20396685]

約数ペア:

[(1, 20396685), (3, 6798895), (5, 4079337), (15, 1359779), (17, 1199805), (51, 399935), (85, 239961), (255, 79987)]