21276963

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1$

素因数の和:459

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 10228797

約数列:

[1, 3, 9, 89, 101, 263, 267, 303, 789, 801, 909, 2367, 8989, 23407, 26563, 26967, 70221, 79689, 80901, 210663, 239067, 2364107, 7092321, 21276963]

約数ペア:

[(1, 21276963), (3, 7092321), (9, 2364107), (89, 239067), (101, 210663), (263, 80901), (267, 79689), (303, 70221), (789, 26967), (801, 26563), (909, 23407), (2367, 8989)]