20408983

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{887}}^1$

素因数の和:1086

約数の個数: 16

約数和(自身を含む): 24721920

約数和(自身を除く): 4312937

約数列:

[1, 7, 19, 133, 173, 887, 1211, 3287, 6209, 16853, 23009, 117971, 153451, 1074157, 2915569, 20408983]

約数ペア:

[(1, 20408983), (7, 2915569), (19, 1074157), (133, 153451), (173, 117971), (887, 23009), (1211, 16853), (3287, 6209)]