81974991

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{5749}}^1$

素因数の和:5863

約数の個数: 24

約数和(自身を含む): 128478000

約数和(自身を除く): 46503009

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 2037, 4753, 5749, 14259, 17247, 40243, 120729, 281701, 557653, 845103, 1672959, 3903571, 11710713, 27324997, 81974991]

約数ペア:

[(1, 81974991), (3, 27324997), (7, 11710713), (21, 3903571), (49, 1672959), (97, 845103), (147, 557653), (291, 281701), (679, 120729), (2037, 40243), (4753, 17247), (5749, 14259)]