81657153

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{827}}^1$

素因数の和:915

約数の個数: 40

約数和(自身を含む): 129843648

約数和(自身を除く): 48186495

約数列:

[1, 3, 9, 23, 27, 53, 69, 81, 159, 207, 477, 621, 827, 1219, 1431, 1863, 2481, 3657, 4293, 7443, 10971, 19021, 22329, 32913, 43831, 57063, 66987, 98739, 131493, 171189, 394479, 513567, 1008113, 1183437, 1540701, 3024339, 3550311, 9073017, 27219051, 81657153]

約数ペア:

[(1, 81657153), (3, 27219051), (9, 9073017), (23, 3550311), (27, 3024339), (53, 1540701), (69, 1183437), (81, 1008113), (159, 513567), (207, 394479), (477, 171189), (621, 131493), (827, 98739), (1219, 66987), (1431, 57063), (1863, 43831), (2481, 32913), (3657, 22329), (4293, 19021), (7443, 10971)]