81950491

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{571}}^1$

素因数の和:715

約数の個数: 24

約数和(自身を含む): 99768240

約数和(自身を除く): 17817749

約数列:

[1, 7, 29, 49, 101, 203, 571, 707, 1421, 2929, 3997, 4949, 16559, 20503, 27979, 57671, 115913, 143521, 403697, 811391, 1672459, 2825879, 11707213, 81950491]

約数ペア:

[(1, 81950491), (7, 11707213), (29, 2825879), (49, 1672459), (101, 811391), (203, 403697), (571, 143521), (707, 115913), (1421, 57671), (2929, 27979), (3997, 20503), (4949, 16559)]