20520071

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{367}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 26707968

約数和(自身を除く): 6187897

約数列:

[1, 11, 13, 17, 23, 143, 187, 221, 253, 299, 367, 391, 2431, 3289, 4037, 4301, 4771, 5083, 6239, 8441, 52481, 55913, 68629, 81107, 92851, 109733, 143497, 892177, 1207063, 1578467, 1865461, 20520071]

約数ペア:

[(1, 20520071), (11, 1865461), (13, 1578467), (17, 1207063), (23, 892177), (143, 143497), (187, 109733), (221, 92851), (253, 81107), (299, 68629), (367, 55913), (391, 52481), (2431, 8441), (3289, 6239), (4037, 5083), (4301, 4771)]