18520839

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{457}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 29312000

約数和(自身を除く): 10791161

約数列:

[1, 3, 9, 19, 27, 57, 79, 171, 237, 457, 513, 711, 1371, 1501, 2133, 4113, 4503, 8683, 12339, 13509, 26049, 36103, 40527, 78147, 108309, 234441, 324927, 685957, 974781, 2057871, 6173613, 18520839]

約数ペア:

[(1, 18520839), (3, 6173613), (9, 2057871), (19, 974781), (27, 685957), (57, 324927), (79, 234441), (171, 108309), (237, 78147), (457, 40527), (513, 36103), (711, 26049), (1371, 13509), (1501, 12339), (2133, 8683), (4113, 4503)]