20999196

素因数分解:

$2^2\times 3^3\times {\mathrm{127}}^1\times {\mathrm{1531}}^1$

素因数の和:1671

約数の個数: 48

約数和(自身を含む): 54906880

約数和(自身を除く): 33907684

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 127, 254, 381, 508, 762, 1143, 1524, 1531, 2286, 3062, 3429, 4572, 4593, 6124, 6858, 9186, 13716, 13779, 18372, 27558, 41337, 55116, 82674, 165348, 194437, 388874, 583311, 777748, 1166622, 1749933, 2333244, 3499866, 5249799, 6999732, 10499598, 20999196]

約数ペア:

[(1, 20999196), (2, 10499598), (3, 6999732), (4, 5249799), (6, 3499866), (9, 2333244), (12, 1749933), (18, 1166622), (27, 777748), (36, 583311), (54, 388874), (108, 194437), (127, 165348), (254, 82674), (381, 55116), (508, 41337), (762, 27558), (1143, 18372), (1524, 13779), (1531, 13716), (2286, 9186), (3062, 6858), (3429, 6124), (4572, 4593)]