20990864

素因数分解:

$2^4\times {\mathrm{787}}^1\times {\mathrm{1667}}^1$

素因数の和:2462

約数の個数: 20

約数和(自身を含む): 40745904

約数和(自身を除く): 19755040

約数列:

[1, 2, 4, 8, 16, 787, 1574, 1667, 3148, 3334, 6296, 6668, 12592, 13336, 26672, 1311929, 2623858, 5247716, 10495432, 20990864]

約数ペア:

[(1, 20990864), (2, 10495432), (4, 5247716), (8, 2623858), (16, 1311929), (787, 26672), (1574, 13336), (1667, 12592), (3148, 6668), (3334, 6296)]