81869739

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{181}}^2$

素因数の和:396

約数の個数: 36

約数和(自身を含む): 135198072

約数和(自身を除く): 53328333

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 181, 357, 543, 833, 1267, 2499, 3077, 3801, 8869, 9231, 21539, 26607, 32761, 64617, 98283, 150773, 229327, 452319, 556937, 687981, 1605289, 1670811, 3898559, 4815867, 11695677, 27289913, 81869739]

約数ペア:

[(1, 81869739), (3, 27289913), (7, 11695677), (17, 4815867), (21, 3898559), (49, 1670811), (51, 1605289), (119, 687981), (147, 556937), (181, 452319), (357, 229327), (543, 150773), (833, 98283), (1267, 64617), (2499, 32761), (3077, 26607), (3801, 21539), (8869, 9231)]