19777280

素因数分解:

$2^8\times 5^1\times {\mathrm{15451}}^1$

素因数の和:15472

約数の個数: 36

約数和(自身を含む): 47375832

約数和(自身を除く): 27598552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15451, 30902, 61804, 77255, 123608, 154510, 247216, 309020, 494432, 618040, 988864, 1236080, 1977728, 2472160, 3955456, 4944320, 9888640, 19777280]

約数ペア:

[(1, 19777280), (2, 9888640), (4, 4944320), (5, 3955456), (8, 2472160), (10, 1977728), (16, 1236080), (20, 988864), (32, 618040), (40, 494432), (64, 309020), (80, 247216), (128, 154510), (160, 123608), (256, 77255), (320, 61804), (640, 30902), (1280, 15451)]