81353503

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{139}}^1\times {\mathrm{691}}^1$

素因数の和:859

約数の個数: 24

約数和(自身を含む): 103080320

約数和(自身を除く): 21726817

約数列:

[1, 7, 11, 77, 121, 139, 691, 847, 973, 1529, 4837, 7601, 10703, 16819, 53207, 83611, 96049, 117733, 585277, 672343, 1056539, 7395773, 11621929, 81353503]

約数ペア:

[(1, 81353503), (7, 11621929), (11, 7395773), (77, 1056539), (121, 672343), (139, 585277), (691, 117733), (847, 96049), (973, 83611), (1529, 53207), (4837, 16819), (7601, 10703)]