21808251

素因数分解:

$3^3\times {\mathrm{541}}^1\times {\mathrm{1493}}^1$

素因数の和:2043

約数の個数: 16

約数和(自身を含む): 32389920

約数和(自身を除く): 10581669

約数列:

[1, 3, 9, 27, 541, 1493, 1623, 4479, 4869, 13437, 14607, 40311, 807713, 2423139, 7269417, 21808251]

約数ペア:

[(1, 21808251), (3, 7269417), (9, 2423139), (27, 807713), (541, 40311), (1493, 14607), (1623, 13437), (4479, 4869)]