81400125

素因数分解:

$3^1\times 5^3\times {\mathrm{131}}^1\times {\mathrm{1657}}^1$

素因数の和:1806

約数の個数: 32

約数和(自身を含む): 136566144

約数和(自身を除く): 55166019

約数列:

[1, 3, 5, 15, 25, 75, 125, 131, 375, 393, 655, 1657, 1965, 3275, 4971, 8285, 9825, 16375, 24855, 41425, 49125, 124275, 207125, 217067, 621375, 651201, 1085335, 3256005, 5426675, 16280025, 27133375, 81400125]

約数ペア:

[(1, 81400125), (3, 27133375), (5, 16280025), (15, 5426675), (25, 3256005), (75, 1085335), (125, 651201), (131, 621375), (375, 217067), (393, 207125), (655, 124275), (1657, 49125), (1965, 41425), (3275, 24855), (4971, 16375), (8285, 9825)]