21353871

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{953}}^1$

素因数の和:1071

約数の個数: 32

約数和(自身を含む): 35900928

約数和(自身を除く): 14547057

約数列:

[1, 3, 7, 11, 21, 33, 77, 97, 231, 291, 679, 953, 1067, 2037, 2859, 3201, 6671, 7469, 10483, 20013, 22407, 31449, 73381, 92441, 220143, 277323, 647087, 1016851, 1941261, 3050553, 7117957, 21353871]

約数ペア:

[(1, 21353871), (3, 7117957), (7, 3050553), (11, 1941261), (21, 1016851), (33, 647087), (77, 277323), (97, 220143), (231, 92441), (291, 73381), (679, 31449), (953, 22407), (1067, 20013), (2037, 10483), (2859, 7469), (3201, 6671)]