20580896

素因数分解:

$2^5\times 7^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 46710720

約数和(自身を除く): 26129824

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 139, 224, 278, 556, 661, 973, 1112, 1322, 1946, 2224, 2644, 3892, 4448, 4627, 5288, 7784, 9254, 10576, 15568, 18508, 21152, 31136, 37016, 74032, 91879, 148064, 183758, 367516, 643153, 735032, 1286306, 1470064, 2572612, 2940128, 5145224, 10290448, 20580896]

約数ペア:

[(1, 20580896), (2, 10290448), (4, 5145224), (7, 2940128), (8, 2572612), (14, 1470064), (16, 1286306), (28, 735032), (32, 643153), (56, 367516), (112, 183758), (139, 148064), (224, 91879), (278, 74032), (556, 37016), (661, 31136), (973, 21152), (1112, 18508), (1322, 15568), (1946, 10576), (2224, 9254), (2644, 7784), (3892, 5288), (4448, 4627)]