1991087

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{149}}^1$

素因数の和:262

約数の個数: 16

約数和(自身を含む): 2419200

約数和(自身を除く): 428113

約数列:

[1, 7, 23, 83, 149, 161, 581, 1043, 1909, 3427, 12367, 13363, 23989, 86569, 284441, 1991087]

約数ペア:

[(1, 1991087), (7, 284441), (23, 86569), (83, 23989), (149, 13363), (161, 12367), (581, 3427), (1043, 1909)]