19802540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43049}}^1$

素因数の和:43081

約数の個数: 24

約数和(自身を含む): 43394400

約数和(自身を除く): 23591860

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43049, 86098, 172196, 215245, 430490, 860980, 990127, 1980254, 3960508, 4950635, 9901270, 19802540]

約数ペア:

[(1, 19802540), (2, 9901270), (4, 4950635), (5, 3960508), (10, 1980254), (20, 990127), (23, 860980), (46, 430490), (92, 215245), (115, 172196), (230, 86098), (460, 43049)]