81255105

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4289}}^1$

素因数の和:4721

約数の個数: 24

約数和(自身を含む): 141209640

約数和(自身を除く): 59954535

約数列:

[1, 3, 5, 9, 15, 45, 421, 1263, 2105, 3789, 4289, 6315, 12867, 18945, 21445, 38601, 64335, 193005, 1805669, 5417007, 9028345, 16251021, 27085035, 81255105]

約数ペア:

[(1, 81255105), (3, 27085035), (5, 16251021), (9, 9028345), (15, 5417007), (45, 1805669), (421, 193005), (1263, 64335), (2105, 38601), (3789, 21445), (4289, 18945), (6315, 12867)]