21685509

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{13613}}^1$

素因数の和:13681

約数の個数: 16

約数和(自身を含む): 32673600

約数和(自身を除く): 10988091

約数列:

[1, 3, 9, 27, 59, 177, 531, 1593, 13613, 40839, 122517, 367551, 803167, 2409501, 7228503, 21685509]

約数ペア:

[(1, 21685509), (3, 7228503), (9, 2409501), (27, 803167), (59, 367551), (177, 122517), (531, 40839), (1593, 13613)]