81254642

素因数分解:

$2^1\times 7^4\times {\mathrm{16921}}^1$

素因数の和:16951

約数の個数: 20

約数和(自身を含む): 142195566

約数和(自身を除く): 60940924

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4802, 16921, 33842, 118447, 236894, 829129, 1658258, 5803903, 11607806, 40627321, 81254642]

約数ペア:

[(1, 81254642), (2, 40627321), (7, 11607806), (14, 5803903), (49, 1658258), (98, 829129), (343, 236894), (686, 118447), (2401, 33842), (4802, 16921)]