20502812

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6563}}^1$

素因数の和:6649

約数の個数: 24

約数和(自身を含む): 39699072

約数和(自身を除く): 19196260

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6563, 13126, 26252, 72193, 144386, 288772, 465973, 931946, 1863892, 5125703, 10251406, 20502812]

約数ペア:

[(1, 20502812), (2, 10251406), (4, 5125703), (11, 1863892), (22, 931946), (44, 465973), (71, 288772), (142, 144386), (284, 72193), (781, 26252), (1562, 13126), (3124, 6563)]