21989847

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{1279}}^1$

素因数の和:1814

約数の個数: 16

約数和(自身を含む): 32071680

約数和(自身を除く): 10081833

約数列:

[1, 3, 11, 33, 521, 1279, 1563, 3837, 5731, 14069, 17193, 42207, 666359, 1999077, 7329949, 21989847]

約数ペア:

[(1, 21989847), (3, 7329949), (11, 1999077), (33, 666359), (521, 42207), (1279, 17193), (1563, 14069), (3837, 5731)]