128220675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 237484800

約数和(自身を除く): 109264125

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 71, 75, 121, 165, 199, 213, 275, 355, 363, 597, 605, 781, 825, 995, 1065, 1775, 1815, 2189, 2343, 2985, 3025, 3905, 4975, 5325, 6567, 8591, 9075, 10945, 11715, 14129, 14925, 19525, 24079, 25773, 32835, 42387, 42955, 54725, 58575, 70645, 72237, 120395, 128865, 155419, 164175, 211935, 214775, 353225, 361185, 466257, 601975, 644325, 777095, 1059675, 1709609, 1805925, 2331285, 3885475, 5128827, 8548045, 11656425, 25644135, 42740225, 128220675]

約数ペア:

[(1, 128220675), (3, 42740225), (5, 25644135), (11, 11656425), (15, 8548045), (25, 5128827), (33, 3885475), (55, 2331285), (71, 1805925), (75, 1709609), (121, 1059675), (165, 777095), (199, 644325), (213, 601975), (275, 466257), (355, 361185), (363, 353225), (597, 214775), (605, 211935), (781, 164175), (825, 155419), (995, 128865), (1065, 120395), (1775, 72237), (1815, 70645), (2189, 58575), (2343, 54725), (2985, 42955), (3025, 42387), (3905, 32835), (4975, 25773), (5325, 24079), (6567, 19525), (8591, 14925), (9075, 14129), (10945, 11715)]