81178937

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{72031}}^1$

素因数の和:72068

約数の個数: 12

約数和(自身を含む): 98539776

約数和(自身を除く): 17360839

約数列:

[1, 7, 23, 49, 161, 1127, 72031, 504217, 1656713, 3529519, 11596991, 81178937]

約数ペア:

[(1, 81178937), (7, 11596991), (23, 3529519), (49, 1656713), (161, 504217), (1127, 72031)]