20153307985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{991}}^1\times {\mathrm{239251}}^1$

素因数の和:240264

約数の個数: 16

約数和(自身を含む): 25632502272

約数和(自身を除く): 5479194287

約数列:

[1, 5, 17, 85, 991, 4955, 16847, 84235, 239251, 1196255, 4067267, 20336335, 237097741, 1185488705, 4030661597, 20153307985]

約数ペア:

[(1, 20153307985), (5, 4030661597), (17, 1185488705), (85, 237097741), (991, 20336335), (4955, 4067267), (16847, 1196255), (84235, 239251)]