20497906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71671}}^1$

素因数の和:71697

約数の個数: 16

約数和(自身を含む): 36122688

約数和(自身を除く): 15624782

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 71671, 143342, 788381, 931723, 1576762, 1863446, 10248953, 20497906]

約数ペア:

[(1, 20497906), (2, 10248953), (11, 1863446), (13, 1576762), (22, 931723), (26, 788381), (143, 143342), (286, 71671)]