18770271

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{347}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 28842240

約数和(自身を除く): 10071969

約数列:

[1, 3, 13, 19, 39, 57, 73, 219, 247, 347, 741, 949, 1041, 1387, 2847, 4161, 4511, 6593, 13533, 18031, 19779, 25331, 54093, 75993, 85709, 257127, 329303, 481289, 987909, 1443867, 6256757, 18770271]

約数ペア:

[(1, 18770271), (3, 6256757), (13, 1443867), (19, 987909), (39, 481289), (57, 329303), (73, 257127), (219, 85709), (247, 75993), (347, 54093), (741, 25331), (949, 19779), (1041, 18031), (1387, 13533), (2847, 6593), (4161, 4511)]