20680972

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2903}}^1$

素因数の和:3057

約数の個数: 24

約数和(自身を含む): 39273696

約数和(自身を除く): 18592724

約数列:

[1, 2, 4, 13, 26, 52, 137, 274, 548, 1781, 2903, 3562, 5806, 7124, 11612, 37739, 75478, 150956, 397711, 795422, 1590844, 5170243, 10340486, 20680972]

約数ペア:

[(1, 20680972), (2, 10340486), (4, 5170243), (13, 1590844), (26, 795422), (52, 397711), (137, 150956), (274, 75478), (548, 37739), (1781, 11612), (2903, 7124), (3562, 5806)]