20868291

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1381}}^1$

素因数の和:1483

約数の個数: 24

約数和(自身を含む): 31907616

約数和(自身を除く): 11039325

約数列:

[1, 3, 9, 23, 69, 73, 207, 219, 657, 1381, 1679, 4143, 5037, 12429, 15111, 31763, 95289, 100813, 285867, 302439, 907317, 2318699, 6956097, 20868291]

約数ペア:

[(1, 20868291), (3, 6956097), (9, 2318699), (23, 907317), (69, 302439), (73, 285867), (207, 100813), (219, 95289), (657, 31763), (1381, 15111), (1679, 12429), (4143, 5037)]