19935080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45307}}^1$

素因数の和:45329

約数の個数: 32

約数和(自身を含む): 48932640

約数和(自身を除く): 28997560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45307, 90614, 181228, 226535, 362456, 453070, 498377, 906140, 996754, 1812280, 1993508, 2491885, 3987016, 4983770, 9967540, 19935080]

約数ペア:

[(1, 19935080), (2, 9967540), (4, 4983770), (5, 3987016), (8, 2491885), (10, 1993508), (11, 1812280), (20, 996754), (22, 906140), (40, 498377), (44, 453070), (55, 362456), (88, 226535), (110, 181228), (220, 90614), (440, 45307)]