21271663

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 24833536

約数和(自身を除く): 3561873

約数列:

[1, 7, 103, 163, 181, 721, 1141, 1267, 16789, 18643, 29503, 117523, 130501, 206521, 3038809, 21271663]

約数ペア:

[(1, 21271663), (7, 3038809), (103, 206521), (163, 130501), (181, 117523), (721, 29503), (1141, 18643), (1267, 16789)]