21993812

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1801}}^1$

素因数の和:1919

約数の個数: 24

約数和(自身を含む): 39961152

約数和(自身を除く): 17967340

約数列:

[1, 2, 4, 43, 71, 86, 142, 172, 284, 1801, 3053, 3602, 6106, 7204, 12212, 77443, 127871, 154886, 255742, 309772, 511484, 5498453, 10996906, 21993812]

約数ペア:

[(1, 21993812), (2, 10996906), (4, 5498453), (43, 511484), (71, 309772), (86, 255742), (142, 154886), (172, 127871), (284, 77443), (1801, 12212), (3053, 7204), (3602, 6106)]