81059470.000000000

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1340681}}^1$

素因数の和:1340697

約数の個数: 24

約数和(自身を含む): 450469152

約数和(自身を除く): 262773812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1340681, 2681362, 5362724, 6703405, 9384767, 13406810, 18769534, 26813620, 37539068, 46923835, 93847670, 187695340]

約数ペア:

[(1, 187695340), (2, 93847670), (4, 46923835), (5, 37539068), (7, 26813620), (10, 18769534), (14, 13406810), (20, 9384767), (28, 6703405), (35, 5362724), (70, 2681362), (140, 1340681)]