28427049

素因数分解:

$3^2\times 7^1\times {\mathrm{653}}^1\times {\mathrm{691}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 47067072

約数和(自身を除く): 18640023

約数列:

[1, 3, 7, 9, 21, 63, 653, 691, 1959, 2073, 4571, 4837, 5877, 6219, 13713, 14511, 41139, 43533, 451223, 1353669, 3158561, 4061007, 9475683, 28427049]

約数ペア:

[(1, 28427049), (3, 9475683), (7, 4061007), (9, 3158561), (21, 1353669), (63, 451223), (653, 43533), (691, 41139), (1959, 14511), (2073, 13713), (4571, 6219), (4837, 5877)]