20731880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39869}}^1$

素因数の和:39893

約数の個数: 32

約数和(自身を含む): 50236200

約数和(自身を除く): 29504320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39869, 79738, 159476, 199345, 318952, 398690, 518297, 797380, 1036594, 1594760, 2073188, 2591485, 4146376, 5182970, 10365940, 20731880]

約数ペア:

[(1, 20731880), (2, 10365940), (4, 5182970), (5, 4146376), (8, 2591485), (10, 2073188), (13, 1594760), (20, 1036594), (26, 797380), (40, 518297), (52, 398690), (65, 318952), (104, 199345), (130, 159476), (260, 79738), (520, 39869)]