21245813

素因数分解:

${\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:316

約数の個数: 16

約数和(自身を含む): 22861440

約数和(自身を除く): 1615627

約数列:

[1, 23, 89, 97, 107, 2047, 2231, 2461, 8633, 9523, 10379, 198559, 219029, 238717, 923731, 21245813]

約数ペア:

[(1, 21245813), (23, 923731), (89, 238717), (97, 219029), (107, 198559), (2047, 10379), (2231, 9523), (2461, 8633)]