820871359

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{1999}}^1\times {\mathrm{5333}}^1$

素因数の和:7350

約数の個数: 16

約数和(自身を含む): 1024128000

約数和(自身を除く): 203256641

約数列:

[1, 7, 11, 77, 1999, 5333, 13993, 21989, 37331, 58663, 153923, 410641, 10660667, 74624669, 117267337, 820871359]

約数ペア:

[(1, 820871359), (7, 117267337), (11, 74624669), (77, 10660667), (1999, 410641), (5333, 153923), (13993, 58663), (21989, 37331)]