21693371

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{743}}^1$

素因数の和:890

約数の個数: 16

約数和(自身を含む): 25665024

約数和(自身を除く): 3971653

約数列:

[1, 7, 43, 97, 301, 679, 743, 4171, 5201, 29197, 31949, 72071, 223643, 504497, 3099053, 21693371]

約数ペア:

[(1, 21693371), (7, 3099053), (43, 504497), (97, 223643), (301, 72071), (679, 31949), (743, 29197), (4171, 5201)]