19945660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142469}}^1$

素因数の和:142485

約数の個数: 24

約数和(自身を含む): 47869920

約数和(自身を除く): 27924260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142469, 284938, 569876, 712345, 997283, 1424690, 1994566, 2849380, 3989132, 4986415, 9972830, 19945660]

約数ペア:

[(1, 19945660), (2, 9972830), (4, 4986415), (5, 3989132), (7, 2849380), (10, 1994566), (14, 1424690), (20, 997283), (28, 712345), (35, 569876), (70, 284938), (140, 142469)]