21082341

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 33814528

約数和(自身を除く): 12732187

約数列:

[1, 3, 7, 21, 37, 43, 111, 129, 259, 301, 631, 777, 903, 1591, 1893, 4417, 4773, 11137, 13251, 23347, 27133, 33411, 70041, 81399, 163429, 189931, 490287, 569793, 1003921, 3011763, 7027447, 21082341]

約数ペア:

[(1, 21082341), (3, 7027447), (7, 3011763), (21, 1003921), (37, 569793), (43, 490287), (111, 189931), (129, 163429), (259, 81399), (301, 70041), (631, 33411), (777, 27133), (903, 23347), (1591, 13251), (1893, 11137), (4417, 4773)]