28645520

素因数分解:

$2^4\times 5^1\times {\mathrm{358069}}^1$

素因数の和:358082

約数の個数: 20

約数和(自身を含む): 66601020

約数和(自身を除く): 37955500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 358069, 716138, 1432276, 1790345, 2864552, 3580690, 5729104, 7161380, 14322760, 28645520]

約数ペア:

[(1, 28645520), (2, 14322760), (4, 7161380), (5, 5729104), (8, 3580690), (10, 2864552), (16, 1790345), (20, 1432276), (40, 716138), (80, 358069)]