64791875

素因数分解:

$5^4\times {\mathrm{83}}^1\times {\mathrm{1249}}^1$

素因数の和:1352

約数の個数: 20

約数和(自身を含む): 82005000

約数和(自身を除く): 17213125

約数列:

[1, 5, 25, 83, 125, 415, 625, 1249, 2075, 6245, 10375, 31225, 51875, 103667, 156125, 518335, 780625, 2591675, 12958375, 64791875]

約数ペア:

[(1, 64791875), (5, 12958375), (25, 2591675), (83, 780625), (125, 518335), (415, 156125), (625, 103667), (1249, 51875), (2075, 31225), (6245, 10375)]