21317505

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129197}}^1$

素因数の和:129216

約数の個数: 16

約数和(自身を含む): 37209024

約数和(自身を除く): 15891519

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 129197, 387591, 645985, 1421167, 1937955, 4263501, 7105835, 21317505]

約数ペア:

[(1, 21317505), (3, 7105835), (5, 4263501), (11, 1937955), (15, 1421167), (33, 645985), (55, 387591), (165, 129197)]