81819213

素因数分解:

$3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{43777}}^1$

素因数の和:43876

約数の個数: 16

約数和(自身を含む): 126080640

約数和(自身を除く): 44261427

約数列:

[1, 3, 7, 21, 89, 267, 623, 1869, 43777, 131331, 306439, 919317, 3896153, 11688459, 27273071, 81819213]

約数ペア:

[(1, 81819213), (3, 27273071), (7, 11688459), (21, 3896153), (89, 919317), (267, 306439), (623, 131331), (1869, 43777)]