21072942

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1499}}^1$

素因数の和:1589

約数の個数: 48

約数和(自身を含む): 50544000

約数和(自身を除く): 29471058

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 71, 99, 142, 198, 213, 426, 639, 781, 1278, 1499, 1562, 2343, 2998, 4497, 4686, 7029, 8994, 13491, 14058, 16489, 26982, 32978, 49467, 98934, 106429, 148401, 212858, 296802, 319287, 638574, 957861, 1170719, 1915722, 2341438, 3512157, 7024314, 10536471, 21072942]

約数ペア:

[(1, 21072942), (2, 10536471), (3, 7024314), (6, 3512157), (9, 2341438), (11, 1915722), (18, 1170719), (22, 957861), (33, 638574), (66, 319287), (71, 296802), (99, 212858), (142, 148401), (198, 106429), (213, 98934), (426, 49467), (639, 32978), (781, 26982), (1278, 16489), (1499, 14058), (1562, 13491), (2343, 8994), (2998, 7029), (4497, 4686)]