21491067

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4339}}^1$

素因数の和:4482

約数の個数: 16

約数和(自身を含む): 31109120

約数和(自身を除く): 9618053

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4339, 4953, 13017, 56407, 169221, 551053, 1653159, 7163689, 21491067]

約数ペア:

[(1, 21491067), (3, 7163689), (13, 1653159), (39, 551053), (127, 169221), (381, 56407), (1651, 13017), (4339, 4953)]