81605875

素因数分解:

$5^3\times {\mathrm{13}}^2\times {\mathrm{3863}}^1$

素因数の和:3904

約数の個数: 24

約数和(自身を含む): 110309472

約数和(自身を除く): 28703597

約数列:

[1, 5, 13, 25, 65, 125, 169, 325, 845, 1625, 3863, 4225, 19315, 21125, 50219, 96575, 251095, 482875, 652847, 1255475, 3264235, 6277375, 16321175, 81605875]

約数ペア:

[(1, 81605875), (5, 16321175), (13, 6277375), (25, 3264235), (65, 1255475), (125, 652847), (169, 482875), (325, 251095), (845, 96575), (1625, 50219), (3863, 21125), (4225, 19315)]