81880713

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{43951}}^1$

素因数の和:43986

約数の個数: 20

約数和(自身を含む): 127636608

約数和(自身を除く): 45755895

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 43951, 131853, 395559, 1010873, 1186677, 3032619, 3560031, 9097857, 27293571, 81880713]

約数ペア:

[(1, 81880713), (3, 27293571), (9, 9097857), (23, 3560031), (27, 3032619), (69, 1186677), (81, 1010873), (207, 395559), (621, 131853), (1863, 43951)]