21180579

素因数分解:

$3^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{2207}}^1$

素因数の和:2674

約数の個数: 16

約数和(自身を含む): 32360448

約数和(自身を除く): 11179869

約数列:

[1, 3, 7, 21, 457, 1371, 2207, 3199, 6621, 9597, 15449, 46347, 1008599, 3025797, 7060193, 21180579]

約数ペア:

[(1, 21180579), (3, 7060193), (7, 3025797), (21, 1008599), (457, 46347), (1371, 15449), (2207, 9597), (3199, 6621)]