18991388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5003}}^1$

素因数の和:5093

約数の個数: 24

約数和(自身を含む): 36289008

約数和(自身を除く): 17297620

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5003, 10006, 20012, 65039, 130078, 260156, 365219, 730438, 1460876, 4747847, 9495694, 18991388]

約数ペア:

[(1, 18991388), (2, 9495694), (4, 4747847), (13, 1460876), (26, 730438), (52, 365219), (73, 260156), (146, 130078), (292, 65039), (949, 20012), (1898, 10006), (3796, 5003)]