21211883

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6719}}^1$

素因数の和:6778

約数の個数: 16

約数和(自身を含む): 27095040

約数和(自身を除く): 5883157

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6719, 47033, 73909, 275479, 517363, 1928353, 3030269, 21211883]

約数ペア:

[(1, 21211883), (7, 3030269), (11, 1928353), (41, 517363), (77, 275479), (287, 73909), (451, 47033), (3157, 6719)]