21354560

素因数分解:

$2^6\times 5^1\times {\mathrm{66733}}^1$

素因数の和:66750

約数の個数: 28

約数和(自身を含む): 50851308

約数和(自身を除く): 29496748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66733, 133466, 266932, 333665, 533864, 667330, 1067728, 1334660, 2135456, 2669320, 4270912, 5338640, 10677280, 21354560]

約数ペア:

[(1, 21354560), (2, 10677280), (4, 5338640), (5, 4270912), (8, 2669320), (10, 2135456), (16, 1334660), (20, 1067728), (32, 667330), (40, 533864), (64, 333665), (80, 266932), (160, 133466), (320, 66733)]