20990186

素因数分解:

$2^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{2339}}^1$

素因数の和:2989

約数の個数: 16

約数和(自身を含む): 36054720

約数和(自身を除く): 15064534

約数列:

[1, 2, 7, 14, 641, 1282, 2339, 4487, 4678, 8974, 16373, 32746, 1499299, 2998598, 10495093, 20990186]

約数ペア:

[(1, 20990186), (2, 10495093), (7, 2998598), (14, 1499299), (641, 32746), (1282, 16373), (2339, 8974), (4487, 4678)]