20778862

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{887}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 36251712

約数和(自身を除く): 15472850

約数列:

[1, 2, 13, 17, 26, 34, 53, 106, 221, 442, 689, 887, 901, 1378, 1774, 1802, 11531, 11713, 15079, 23062, 23426, 30158, 47011, 94022, 196027, 392054, 611143, 799187, 1222286, 1598374, 10389431, 20778862]

約数ペア:

[(1, 20778862), (2, 10389431), (13, 1598374), (17, 1222286), (26, 799187), (34, 611143), (53, 392054), (106, 196027), (221, 94022), (442, 47011), (689, 30158), (887, 23426), (901, 23062), (1378, 15079), (1774, 11713), (1802, 11531)]