56557720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15887}}^1$

素因数の和:15987

約数の個数: 32

約数和(自身を含む): 128692800

約数和(自身を除く): 72135080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 15887, 31774, 63548, 79435, 127096, 158870, 317740, 635480, 1413943, 2827886, 5655772, 7069715, 11311544, 14139430, 28278860, 56557720]

約数ペア:

[(1, 56557720), (2, 28278860), (4, 14139430), (5, 11311544), (8, 7069715), (10, 5655772), (20, 2827886), (40, 1413943), (89, 635480), (178, 317740), (356, 158870), (445, 127096), (712, 79435), (890, 63548), (1780, 31774), (3560, 15887)]