18217780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{130127}}^1$

素因数の和:130143

約数の個数: 24

約数和(自身を含む): 43723008

約数和(自身を除く): 25505228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 130127, 260254, 520508, 650635, 910889, 1301270, 1821778, 2602540, 3643556, 4554445, 9108890, 18217780]

約数ペア:

[(1, 18217780), (2, 9108890), (4, 4554445), (5, 3643556), (7, 2602540), (10, 1821778), (14, 1301270), (20, 910889), (28, 650635), (35, 520508), (70, 260254), (140, 130127)]