21810724

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{691}}^1$

素因数の和:1315

約数の個数: 24

約数和(自身を含む): 41232128

約数和(自身を除く): 19421404

約数列:

[1, 2, 4, 13, 26, 52, 607, 691, 1214, 1382, 2428, 2764, 7891, 8983, 15782, 17966, 31564, 35932, 419437, 838874, 1677748, 5452681, 10905362, 21810724]

約数ペア:

[(1, 21810724), (2, 10905362), (4, 5452681), (13, 1677748), (26, 838874), (52, 419437), (607, 35932), (691, 31564), (1214, 17966), (1382, 15782), (2428, 8983), (2764, 7891)]