21226347

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{27109}}^1$

素因数の和:27147

約数の個数: 16

約数和(自身を含む): 32532000

約数和(自身を除く): 11305653

約数列:

[1, 3, 9, 27, 29, 87, 261, 783, 27109, 81327, 243981, 731943, 786161, 2358483, 7075449, 21226347]

約数ペア:

[(1, 21226347), (3, 7075449), (9, 2358483), (27, 786161), (29, 731943), (87, 243981), (261, 81327), (783, 27109)]