20651508

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4127}}^1$

素因数の和:4276

約数の個数: 36

約数和(自身を含む): 52590720

約数和(自身を除く): 31939212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4127, 5004, 8254, 12381, 16508, 24762, 37143, 49524, 74286, 148572, 573653, 1147306, 1720959, 2294612, 3441918, 5162877, 6883836, 10325754, 20651508]

約数ペア:

[(1, 20651508), (2, 10325754), (3, 6883836), (4, 5162877), (6, 3441918), (9, 2294612), (12, 1720959), (18, 1147306), (36, 573653), (139, 148572), (278, 74286), (417, 49524), (556, 37143), (834, 24762), (1251, 16508), (1668, 12381), (2502, 8254), (4127, 5004)]