21785478

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{25391}}^1$

素因数の和:25420

約数の個数: 32

約数和(自身を含む): 51190272

約数和(自身を除く): 29404794

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858, 25391, 50782, 76173, 152346, 279301, 330083, 558602, 660166, 837903, 990249, 1675806, 1980498, 3630913, 7261826, 10892739, 21785478]

約数ペア:

[(1, 21785478), (2, 10892739), (3, 7261826), (6, 3630913), (11, 1980498), (13, 1675806), (22, 990249), (26, 837903), (33, 660166), (39, 558602), (66, 330083), (78, 279301), (143, 152346), (286, 76173), (429, 50782), (858, 25391)]