21066383

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{173}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 26308800

約数和(自身を除く): 5242417

約数列:

[1, 13, 17, 19, 29, 173, 221, 247, 323, 377, 493, 551, 2249, 2941, 3287, 4199, 5017, 6409, 7163, 9367, 38233, 42731, 55879, 65221, 85289, 95323, 121771, 726427, 1108757, 1239199, 1620491, 21066383]

約数ペア:

[(1, 21066383), (13, 1620491), (17, 1239199), (19, 1108757), (29, 726427), (173, 121771), (221, 95323), (247, 85289), (323, 65221), (377, 55879), (493, 42731), (551, 38233), (2249, 9367), (2941, 7163), (3287, 6409), (4199, 5017)]