20887685

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1583}}^1$

素因数の和:1637

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11045755

約数列:

[1, 5, 7, 13, 29, 35, 65, 91, 145, 203, 377, 455, 1015, 1583, 1885, 2639, 7915, 11081, 13195, 20579, 45907, 55405, 102895, 144053, 229535, 321349, 596791, 720265, 1606745, 2983955, 4177537, 20887685]

約数ペア:

[(1, 20887685), (5, 4177537), (7, 2983955), (13, 1606745), (29, 720265), (35, 596791), (65, 321349), (91, 229535), (145, 144053), (203, 102895), (377, 55405), (455, 45907), (1015, 20579), (1583, 13195), (1885, 11081), (2639, 7915)]