20719153

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{1021}}^1$

素因数の和:1264

約数の個数: 16

約数和(自身を含む): 25639936

約数和(自身を除く): 4920783

約数列:

[1, 7, 13, 91, 223, 1021, 1561, 2899, 7147, 13273, 20293, 92911, 227683, 1593781, 2959879, 20719153]

約数ペア:

[(1, 20719153), (7, 2959879), (13, 1593781), (91, 227683), (223, 92911), (1021, 20293), (1561, 13273), (2899, 7147)]