128440240

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{11719}}^1$

素因数の和:11869

約数の個数: 40

約数和(自身を含む): 300828960

約数和(自身を除く): 172388720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 274, 548, 685, 1096, 1370, 2192, 2740, 5480, 10960, 11719, 23438, 46876, 58595, 93752, 117190, 187504, 234380, 468760, 937520, 1605503, 3211006, 6422012, 8027515, 12844024, 16055030, 25688048, 32110060, 64220120, 128440240]

約数ペア:

[(1, 128440240), (2, 64220120), (4, 32110060), (5, 25688048), (8, 16055030), (10, 12844024), (16, 8027515), (20, 6422012), (40, 3211006), (80, 1605503), (137, 937520), (274, 468760), (548, 234380), (685, 187504), (1096, 117190), (1370, 93752), (2192, 58595), (2740, 46876), (5480, 23438), (10960, 11719)]