21228011

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{1669}}^1$

素因数の和:1778

約数の個数: 16

約数和(自身を含む): 25651200

約数和(自身を除く): 4423189

約数列:

[1, 7, 23, 79, 161, 553, 1669, 1817, 11683, 12719, 38387, 131851, 268709, 922957, 3032573, 21228011]

約数ペア:

[(1, 21228011), (7, 3032573), (23, 922957), (79, 268709), (161, 131851), (553, 38387), (1669, 12719), (1817, 11683)]