81511742

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{349}}^1\times {\mathrm{691}}^1$

素因数の和:1068

約数の個数: 24

約数和(自身を含む): 132967800

約数和(自身を除く): 51456058

約数列:

[1, 2, 13, 26, 169, 338, 349, 691, 698, 1382, 4537, 8983, 9074, 17966, 58981, 116779, 117962, 233558, 241159, 482318, 3135067, 6270134, 40755871, 81511742]

約数ペア:

[(1, 81511742), (2, 40755871), (13, 6270134), (26, 3135067), (169, 482318), (338, 241159), (349, 233558), (691, 117962), (698, 116779), (1382, 58981), (4537, 17966), (8983, 9074)]