21780456669

素因数分解:

$3^2\times {\mathrm{199}}^1\times {\mathrm{643}}^1\times {\mathrm{18913}}^1$

素因数の和:19761

約数の個数: 24

約数和(自身を含む): 31669601600

約数和(自身を除く): 9889144931

約数列:

[1, 3, 9, 199, 597, 643, 1791, 1929, 5787, 18913, 56739, 127957, 170217, 383871, 1151613, 3763687, 11291061, 12161059, 33873183, 36483177, 109449531, 2420050741, 7260152223, 21780456669]

約数ペア:

[(1, 21780456669), (3, 7260152223), (9, 2420050741), (199, 109449531), (597, 36483177), (643, 33873183), (1791, 12161059), (1929, 11291061), (5787, 3763687), (18913, 1151613), (56739, 383871), (127957, 170217)]