21242895

素因数分解:

$3^1\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1277}}^1$

素因数の和:2394

約数の個数: 16

約数和(自身を含む): 34045920

約数和(自身を除く): 12803025

約数列:

[1, 3, 5, 15, 1109, 1277, 3327, 3831, 5545, 6385, 16635, 19155, 1416193, 4248579, 7080965, 21242895]

約数ペア:

[(1, 21242895), (3, 7080965), (5, 4248579), (15, 1416193), (1109, 19155), (1277, 16635), (3327, 6385), (3831, 5545)]