21000388662

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1493839}}^1$

素因数の和:1493929

約数の個数: 48

約数和(自身を含む): 50336432640

約数和(自身を除く): 29336043978

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 71, 99, 142, 198, 213, 426, 639, 781, 1278, 1562, 2343, 4686, 7029, 14058, 1493839, 2987678, 4481517, 8963034, 13444551, 16432229, 26889102, 32864458, 49296687, 98593374, 106062569, 147890061, 212125138, 295780122, 318187707, 636375414, 954563121, 1166688259, 1909126242, 2333376518, 3500064777, 7000129554, 10500194331, 21000388662]

約数ペア:

[(1, 21000388662), (2, 10500194331), (3, 7000129554), (6, 3500064777), (9, 2333376518), (11, 1909126242), (18, 1166688259), (22, 954563121), (33, 636375414), (66, 318187707), (71, 295780122), (99, 212125138), (142, 147890061), (198, 106062569), (213, 98593374), (426, 49296687), (639, 32864458), (781, 26889102), (1278, 16432229), (1562, 13444551), (2343, 8963034), (4686, 4481517), (7029, 2987678), (14058, 1493839)]