1261233920

素因数分解:

$2^8\times 5^1\times {\mathrm{985339}}^1$

素因数の和:985360

約数の個数: 36

約数和(自身を含む): 3021052440

約数和(自身を除く): 1759818520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 985339, 1970678, 3941356, 4926695, 7882712, 9853390, 15765424, 19706780, 31530848, 39413560, 63061696, 78827120, 126123392, 157654240, 252246784, 315308480, 630616960, 1261233920]

約数ペア:

[(1, 1261233920), (2, 630616960), (4, 315308480), (5, 252246784), (8, 157654240), (10, 126123392), (16, 78827120), (20, 63061696), (32, 39413560), (40, 31530848), (64, 19706780), (80, 15765424), (128, 9853390), (160, 7882712), (256, 4926695), (320, 3941356), (640, 1970678), (1280, 985339)]