21969784

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{859}}^1$

素因数の和:1027

約数の個数: 32

約数和(自身を含む): 43344000

約数和(自身を除く): 21374216

約数列:

[1, 2, 4, 8, 23, 46, 92, 139, 184, 278, 556, 859, 1112, 1718, 3197, 3436, 6394, 6872, 12788, 19757, 25576, 39514, 79028, 119401, 158056, 238802, 477604, 955208, 2746223, 5492446, 10984892, 21969784]

約数ペア:

[(1, 21969784), (2, 10984892), (4, 5492446), (8, 2746223), (23, 955208), (46, 477604), (92, 238802), (139, 158056), (184, 119401), (278, 79028), (556, 39514), (859, 25576), (1112, 19757), (1718, 12788), (3197, 6872), (3436, 6394)]