21283119

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{719}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16456401

約数列:

[1, 3, 9, 11, 13, 23, 33, 39, 69, 99, 117, 143, 207, 253, 299, 429, 719, 759, 897, 1287, 2157, 2277, 2691, 3289, 6471, 7909, 9347, 9867, 16537, 23727, 28041, 29601, 49611, 71181, 84123, 102817, 148833, 181907, 214981, 308451, 545721, 644943, 925353, 1637163, 1934829, 2364791, 7094373, 21283119]

約数ペア:

[(1, 21283119), (3, 7094373), (9, 2364791), (11, 1934829), (13, 1637163), (23, 925353), (33, 644943), (39, 545721), (69, 308451), (99, 214981), (117, 181907), (143, 148833), (207, 102817), (253, 84123), (299, 71181), (429, 49611), (719, 29601), (759, 28041), (897, 23727), (1287, 16537), (2157, 9867), (2277, 9347), (2691, 7909), (3289, 6471)]