21457593

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4327}}^1$

素因数の和:4381

約数の個数: 24

約数和(自身を含む): 33758400

約数和(自身を除く): 12300807

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4327, 4959, 12981, 38943, 82213, 125483, 246639, 376449, 739917, 1129347, 2384177, 7152531, 21457593]

約数ペア:

[(1, 21457593), (3, 7152531), (9, 2384177), (19, 1129347), (29, 739917), (57, 376449), (87, 246639), (171, 125483), (261, 82213), (551, 38943), (1653, 12981), (4327, 4959)]