81400828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{661}}^1\times {\mathrm{1811}}^1$

素因数の和:2493

約数の個数: 24

約数和(自身を含む): 151142544

約数和(自身を除く): 69741716

約数列:

[1, 2, 4, 17, 34, 68, 661, 1322, 1811, 2644, 3622, 7244, 11237, 22474, 30787, 44948, 61574, 123148, 1197071, 2394142, 4788284, 20350207, 40700414, 81400828]

約数ペア:

[(1, 81400828), (2, 40700414), (4, 20350207), (17, 4788284), (34, 2394142), (68, 1197071), (661, 123148), (1322, 61574), (1811, 44948), (2644, 30787), (3622, 22474), (7244, 11237)]