21368221

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{607}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 25214976

約数和(自身を除く): 3846755

約数列:

[1, 7, 47, 107, 329, 607, 749, 4249, 5029, 28529, 35203, 64949, 199703, 454643, 3052603, 21368221]

約数ペア:

[(1, 21368221), (7, 3052603), (47, 454643), (107, 199703), (329, 64949), (607, 35203), (749, 28529), (4249, 5029)]