81406665

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4297}}^1$

素因数の和:4729

約数の個数: 24

約数和(自身を含む): 141472968

約数和(自身を除く): 60066303

約数列:

[1, 3, 5, 9, 15, 45, 421, 1263, 2105, 3789, 4297, 6315, 12891, 18945, 21485, 38673, 64455, 193365, 1809037, 5427111, 9045185, 16281333, 27135555, 81406665]

約数ペア:

[(1, 81406665), (3, 27135555), (5, 16281333), (9, 9045185), (15, 5427111), (45, 1809037), (421, 193365), (1263, 64455), (2105, 38673), (3789, 21485), (4297, 18945), (6315, 12891)]