21047637

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13163}}^1$

素因数の和:13220

約数の個数: 16

約数和(自身を含む): 30961728

約数和(自身を除く): 9914091

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13163, 39489, 171119, 513357, 539683, 1619049, 7015879, 21047637]

約数ペア:

[(1, 21047637), (3, 7015879), (13, 1619049), (39, 539683), (41, 513357), (123, 171119), (533, 39489), (1599, 13163)]