20118440

素因数分解:

$2^3\times 5^1\times {\mathrm{502961}}^1$

素因数の和:502972

約数の個数: 16

約数和(自身を含む): 45266580

約数和(自身を除く): 25148140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 502961, 1005922, 2011844, 2514805, 4023688, 5029610, 10059220, 20118440]

約数ペア:

[(1, 20118440), (2, 10059220), (4, 5029610), (5, 4023688), (8, 2514805), (10, 2011844), (20, 1005922), (40, 502961)]