21108726

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 26065674

約数列:

[1, 2, 3, 6, 9, 18, 71, 83, 142, 166, 199, 213, 249, 398, 426, 498, 597, 639, 747, 1194, 1278, 1494, 1791, 3582, 5893, 11786, 14129, 16517, 17679, 28258, 33034, 35358, 42387, 49551, 53037, 84774, 99102, 106074, 127161, 148653, 254322, 297306, 1172707, 2345414, 3518121, 7036242, 10554363, 21108726]

約数ペア:

[(1, 21108726), (2, 10554363), (3, 7036242), (6, 3518121), (9, 2345414), (18, 1172707), (71, 297306), (83, 254322), (142, 148653), (166, 127161), (199, 106074), (213, 99102), (249, 84774), (398, 53037), (426, 49551), (498, 42387), (597, 35358), (639, 33034), (747, 28258), (1194, 17679), (1278, 16517), (1494, 14129), (1791, 11786), (3582, 5893)]