21791763

素因数分解:

$3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1811}}^1$

素因数の和:2015

約数の個数: 24

約数和(自身を含む): 36182016

約数和(自身を除く): 14390253

約数列:

[1, 3, 7, 9, 21, 63, 191, 573, 1337, 1719, 1811, 4011, 5433, 12033, 12677, 16299, 38031, 114093, 345901, 1037703, 2421307, 3113109, 7263921, 21791763]

約数ペア:

[(1, 21791763), (3, 7263921), (7, 3113109), (9, 2421307), (21, 1037703), (63, 345901), (191, 114093), (573, 38031), (1337, 16299), (1719, 12677), (1811, 12033), (4011, 5433)]