128129975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{5701}}^1$

素因数の和:5771

約数の個数: 24

約数和(自身を含む): 169691520

約数和(自身を除く): 41561545

約数列:

[1, 5, 25, 29, 31, 145, 155, 725, 775, 899, 4495, 5701, 22475, 28505, 142525, 165329, 176731, 826645, 883655, 4133225, 4418275, 5125199, 25625995, 128129975]

約数ペア:

[(1, 128129975), (5, 25625995), (25, 5125199), (29, 4418275), (31, 4133225), (145, 883655), (155, 826645), (725, 176731), (775, 165329), (899, 142525), (4495, 28505), (5701, 22475)]