28289919

素因数分解:

$3^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{2063}}^1$

素因数の和:2726

約数の個数: 16

約数和(自身を含む): 43195392

約数和(自身を除く): 14905473

約数列:

[1, 3, 7, 21, 653, 1959, 2063, 4571, 6189, 13713, 14441, 43323, 1347139, 4041417, 9429973, 28289919]

約数ペア:

[(1, 28289919), (3, 9429973), (7, 4041417), (21, 1347139), (653, 43323), (1959, 14441), (2063, 13713), (4571, 6189)]