20507842

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{643}}^1$

素因数の和:1113

約数の個数: 16

約数和(自身を含む): 31715712

約数和(自身を除く): 11207870

約数列:

[1, 2, 37, 74, 431, 643, 862, 1286, 15947, 23791, 31894, 47582, 277133, 554266, 10253921, 20507842]

約数ペア:

[(1, 20507842), (2, 10253921), (37, 554266), (74, 277133), (431, 47582), (643, 31894), (862, 23791), (1286, 15947)]