1285427840

素因数分解:

$2^7\times 5^1\times {\mathrm{2008481}}^1$

素因数の和:2008500

約数の個数: 32

約数和(自身を含む): 3072977460

約数和(自身を除く): 1787549620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 2008481, 4016962, 8033924, 10042405, 16067848, 20084810, 32135696, 40169620, 64271392, 80339240, 128542784, 160678480, 257085568, 321356960, 642713920, 1285427840]

約数ペア:

[(1, 1285427840), (2, 642713920), (4, 321356960), (5, 257085568), (8, 160678480), (10, 128542784), (16, 80339240), (20, 64271392), (32, 40169620), (40, 32135696), (64, 20084810), (80, 16067848), (128, 10042405), (160, 8033924), (320, 4016962), (640, 2008481)]