20557966

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71881}}^1$

素因数の和:71907

約数の個数: 16

約数和(自身を含む): 36228528

約数和(自身を除く): 15670562

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 71881, 143762, 790691, 934453, 1581382, 1868906, 10278983, 20557966]

約数ペア:

[(1, 20557966), (2, 10278983), (11, 1868906), (13, 1581382), (22, 934453), (26, 790691), (143, 143762), (286, 71881)]