81971271

素因数分解:

$3^4\times {\mathrm{661}}^1\times {\mathrm{1531}}^1$

素因数の和:2204

約数の個数: 20

約数和(自身を含む): 122716264

約数和(自身を除く): 40744993

約数列:

[1, 3, 9, 27, 81, 661, 1531, 1983, 4593, 5949, 13779, 17847, 41337, 53541, 124011, 1011991, 3035973, 9107919, 27323757, 81971271]

約数ペア:

[(1, 81971271), (3, 27323757), (9, 9107919), (27, 3035973), (81, 1011991), (661, 124011), (1531, 53541), (1983, 41337), (4593, 17847), (5949, 13779)]