15781997

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2113}}^1$

素因数の和:2228

約数の個数: 16

約数和(自身を含む): 19888512

約数和(自身を除く): 4106515

約数列:

[1, 7, 11, 77, 97, 679, 1067, 2113, 7469, 14791, 23243, 162701, 204961, 1434727, 2254571, 15781997]

約数ペア:

[(1, 15781997), (7, 2254571), (11, 1434727), (77, 204961), (97, 162701), (679, 23243), (1067, 14791), (2113, 7469)]