128565520

素因数分解:

$2^4\times 5^1\times {\mathrm{1607069}}^1$

素因数の和:1607082

約数の個数: 20

約数和(自身を含む): 298915020

約数和(自身を除く): 170349500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1607069, 3214138, 6428276, 8035345, 12856552, 16070690, 25713104, 32141380, 64282760, 128565520]

約数ペア:

[(1, 128565520), (2, 64282760), (4, 32141380), (5, 25713104), (8, 16070690), (10, 12856552), (16, 8035345), (20, 6428276), (40, 3214138), (80, 1607069)]