19145320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11131}}^1$

素因数の和:11185

約数の個数: 32

約数和(自身を含む): 44082720

約数和(自身を除く): 24937400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11131, 22262, 44524, 55655, 89048, 111310, 222620, 445240, 478633, 957266, 1914532, 2393165, 3829064, 4786330, 9572660, 19145320]

約数ペア:

[(1, 19145320), (2, 9572660), (4, 4786330), (5, 3829064), (8, 2393165), (10, 1914532), (20, 957266), (40, 478633), (43, 445240), (86, 222620), (172, 111310), (215, 89048), (344, 55655), (430, 44524), (860, 22262), (1720, 11131)]