20740979

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{1097}}^1$

素因数の和:1214

約数の個数: 16

約数和(自身を含む): 24700608

約数和(自身を除く): 3959629

約数列:

[1, 7, 37, 73, 259, 511, 1097, 2701, 7679, 18907, 40589, 80081, 284123, 560567, 2962997, 20740979]

約数ペア:

[(1, 20740979), (7, 2962997), (37, 560567), (73, 284123), (259, 80081), (511, 40589), (1097, 18907), (2701, 7679)]