8721280

素因数分解:

$2^7\times 5^1\times {\mathrm{13627}}^1$

素因数の和:13646

約数の個数: 32

約数和(自身を含む): 20850840

約数和(自身を除く): 12129560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 13627, 27254, 54508, 68135, 109016, 136270, 218032, 272540, 436064, 545080, 872128, 1090160, 1744256, 2180320, 4360640, 8721280]

約数ペア:

[(1, 8721280), (2, 4360640), (4, 2180320), (5, 1744256), (8, 1090160), (10, 872128), (16, 545080), (20, 436064), (32, 272540), (40, 218032), (64, 136270), (80, 109016), (128, 68135), (160, 54508), (320, 27254), (640, 13627)]