20450440

素因数分解:

$2^3\times 5^1\times {\mathrm{511261}}^1$

素因数の和:511272

約数の個数: 16

約数和(自身を含む): 46013580

約数和(自身を除く): 25563140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 511261, 1022522, 2045044, 2556305, 4090088, 5112610, 10225220, 20450440]

約数ペア:

[(1, 20450440), (2, 10225220), (4, 5112610), (5, 4090088), (8, 2556305), (10, 2045044), (20, 1022522), (40, 511261)]