21577280

素因数分解:

$2^6\times 5^1\times {\mathrm{67429}}^1$

素因数の和:67446

約数の個数: 28

約数和(自身を含む): 51381660

約数和(自身を除く): 29804380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67429, 134858, 269716, 337145, 539432, 674290, 1078864, 1348580, 2157728, 2697160, 4315456, 5394320, 10788640, 21577280]

約数ペア:

[(1, 21577280), (2, 10788640), (4, 5394320), (5, 4315456), (8, 2697160), (10, 2157728), (16, 1348580), (20, 1078864), (32, 674290), (40, 539432), (64, 337145), (80, 269716), (160, 134858), (320, 67429)]