81541875

素因数分解:

$3^1\times 5^4\times {\mathrm{157}}^1\times {\mathrm{277}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 137218576

約数和(自身を除く): 55676701

約数列:

[1, 3, 5, 15, 25, 75, 125, 157, 277, 375, 471, 625, 785, 831, 1385, 1875, 2355, 3925, 4155, 6925, 11775, 19625, 20775, 34625, 43489, 58875, 98125, 103875, 130467, 173125, 217445, 294375, 519375, 652335, 1087225, 3261675, 5436125, 16308375, 27180625, 81541875]

約数ペア:

[(1, 81541875), (3, 27180625), (5, 16308375), (15, 5436125), (25, 3261675), (75, 1087225), (125, 652335), (157, 519375), (277, 294375), (375, 217445), (471, 173125), (625, 130467), (785, 103875), (831, 98125), (1385, 58875), (1875, 43489), (2355, 34625), (3925, 20775), (4155, 19625), (6925, 11775)]