21918237

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{809}}^1\times {\mathrm{821}}^1$

素因数の和:1644

約数の個数: 16

約数和(自身を含む): 31959360

約数和(自身を除く): 10041123

約数列:

[1, 3, 11, 33, 809, 821, 2427, 2463, 8899, 9031, 26697, 27093, 664189, 1992567, 7306079, 21918237]

約数ペア:

[(1, 21918237), (3, 7306079), (11, 1992567), (33, 664189), (809, 27093), (821, 26697), (2427, 9031), (2463, 8899)]