19884447

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 33441408

約数和(自身を除く): 13556961

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 173, 243, 297, 387, 473, 519, 891, 1161, 1419, 1557, 1903, 2673, 3483, 4257, 4671, 5709, 7439, 10449, 12771, 14013, 17127, 22317, 38313, 42039, 51381, 66951, 81829, 114939, 154143, 200853, 245487, 462429, 602559, 736461, 1807677, 2209383, 6628149, 19884447]

約数ペア:

[(1, 19884447), (3, 6628149), (9, 2209383), (11, 1807677), (27, 736461), (33, 602559), (43, 462429), (81, 245487), (99, 200853), (129, 154143), (173, 114939), (243, 81829), (297, 66951), (387, 51381), (473, 42039), (519, 38313), (891, 22317), (1161, 17127), (1419, 14013), (1557, 12771), (1903, 10449), (2673, 7439), (3483, 5709), (4257, 4671)]