81107156

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{119981}}^1$

素因数の和:120011

約数の個数: 18

約数和(自身を含む): 153696942

約数和(自身を除く): 72589786

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 119981, 239962, 479924, 1559753, 3119506, 6239012, 20276789, 40553578, 81107156]

約数ペア:

[(1, 81107156), (2, 40553578), (4, 20276789), (13, 6239012), (26, 3119506), (52, 1559753), (169, 479924), (338, 239962), (676, 119981)]