21000994542

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{165469}}^1$

素因数の和:166129

約数の個数: 48

約数和(自身を含む): 49716454320

約数和(自身を除く): 28715459778

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 641, 1282, 1923, 3846, 5769, 7051, 11538, 14102, 21153, 42306, 63459, 126918, 165469, 330938, 496407, 992814, 1489221, 1820159, 2978442, 3640318, 5460477, 10920954, 16381431, 32762862, 106065629, 212131258, 318196887, 636393774, 954590661, 1166721919, 1909181322, 2333443838, 3500165757, 7000331514, 10500497271, 21000994542]

約数ペア:

[(1, 21000994542), (2, 10500497271), (3, 7000331514), (6, 3500165757), (9, 2333443838), (11, 1909181322), (18, 1166721919), (22, 954590661), (33, 636393774), (66, 318196887), (99, 212131258), (198, 106065629), (641, 32762862), (1282, 16381431), (1923, 10920954), (3846, 5460477), (5769, 3640318), (7051, 2978442), (11538, 1820159), (14102, 1489221), (21153, 992814), (42306, 496407), (63459, 330938), (126918, 165469)]