20751291

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1171}}^1$

素因数の和:1367

約数の個数: 24

約数和(自身を含む): 32909760

約数和(自身を除く): 12158469

約数列:

[1, 3, 9, 11, 33, 99, 179, 537, 1171, 1611, 1969, 3513, 5907, 10539, 12881, 17721, 38643, 115929, 209609, 628827, 1886481, 2305699, 6917097, 20751291]

約数ペア:

[(1, 20751291), (3, 6917097), (9, 2305699), (11, 1886481), (33, 628827), (99, 209609), (179, 115929), (537, 38643), (1171, 17721), (1611, 12881), (1969, 10539), (3513, 5907)]