21907821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{9521}}^1$

素因数の和:9596

約数の個数: 16

約数和(自身を含む): 31993920

約数和(自身を除く): 10086099

約数列:

[1, 3, 13, 39, 59, 177, 767, 2301, 9521, 28563, 123773, 371319, 561739, 1685217, 7302607, 21907821]

約数ペア:

[(1, 21907821), (3, 7302607), (13, 1685217), (39, 561739), (59, 371319), (177, 123773), (767, 28563), (2301, 9521)]