19554320

素因数分解:

$2^4\times 5^1\times {\mathrm{244429}}^1$

素因数の和:244442

約数の個数: 20

約数和(自身を含む): 45463980

約数和(自身を除く): 25909660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 244429, 488858, 977716, 1222145, 1955432, 2444290, 3910864, 4888580, 9777160, 19554320]

約数ペア:

[(1, 19554320), (2, 9777160), (4, 4888580), (5, 3910864), (8, 2444290), (10, 1955432), (16, 1222145), (20, 977716), (40, 488858), (80, 244429)]