81468140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{24103}}^1$

素因数の和:24138

約数の個数: 36

約数和(自身を含む): 185263344

約数和(自身を除く): 103795204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 24103, 48206, 96412, 120515, 241030, 313339, 482060, 626678, 1253356, 1566695, 3133390, 4073407, 6266780, 8146814, 16293628, 20367035, 40734070, 81468140]

約数ペア:

[(1, 81468140), (2, 40734070), (4, 20367035), (5, 16293628), (10, 8146814), (13, 6266780), (20, 4073407), (26, 3133390), (52, 1566695), (65, 1253356), (130, 626678), (169, 482060), (260, 313339), (338, 241030), (676, 120515), (845, 96412), (1690, 48206), (3380, 24103)]