21809871

素因数分解:

$3^3\times {\mathrm{53}}^1\times {\mathrm{15241}}^1$

素因数の和:15303

約数の個数: 16

約数和(自身を含む): 32922720

約数和(自身を除く): 11112849

約数列:

[1, 3, 9, 27, 53, 159, 477, 1431, 15241, 45723, 137169, 411507, 807773, 2423319, 7269957, 21809871]

約数ペア:

[(1, 21809871), (3, 7269957), (9, 2423319), (27, 807773), (53, 411507), (159, 137169), (477, 45723), (1431, 15241)]