12777121

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1301}}^1$

素因数の和:1392

約数の個数: 16

約数和(自身を含む): 15499008

約数和(自身を除く): 2721887

約数列:

[1, 7, 23, 61, 161, 427, 1301, 1403, 9107, 9821, 29923, 79361, 209461, 555527, 1825303, 12777121]

約数ペア:

[(1, 12777121), (7, 1825303), (23, 555527), (61, 209461), (161, 79361), (427, 29923), (1301, 9821), (1403, 9107)]