81798164

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{21017}}^1$

素因数の和:21167

約数の個数: 24

約数和(自身を含む): 164781120

約数和(自身を除く): 82982956

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 21017, 42034, 84068, 147119, 294238, 588476, 2921363, 5842726, 11685452, 20449541, 40899082, 81798164]

約数ペア:

[(1, 81798164), (2, 40899082), (4, 20449541), (7, 11685452), (14, 5842726), (28, 2921363), (139, 588476), (278, 294238), (556, 147119), (973, 84068), (1946, 42034), (3892, 21017)]