21821019

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{1279}}^1$

素因数の和:1351

約数の個数: 24

約数和(自身を含む): 32686080

約数和(自身を除く): 10865061

約数列:

[1, 3, 11, 33, 47, 121, 141, 363, 517, 1279, 1551, 3837, 5687, 14069, 17061, 42207, 60113, 154759, 180339, 464277, 661243, 1983729, 7273673, 21821019]

約数ペア:

[(1, 21821019), (3, 7273673), (11, 1983729), (33, 661243), (47, 464277), (121, 180339), (141, 154759), (363, 60113), (517, 42207), (1279, 17061), (1551, 14069), (3837, 5687)]