21741831

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:412

約数の個数: 32

約数和(自身を含む): 33976320

約数和(自身を除く): 12234489

約数列:

[1, 3, 9, 23, 27, 69, 157, 207, 223, 471, 621, 669, 1413, 2007, 3611, 4239, 5129, 6021, 10833, 15387, 32499, 35011, 46161, 97497, 105033, 138483, 315099, 805253, 945297, 2415759, 7247277, 21741831]

約数ペア:

[(1, 21741831), (3, 7247277), (9, 2415759), (23, 945297), (27, 805253), (69, 315099), (157, 138483), (207, 105033), (223, 97497), (471, 46161), (621, 35011), (669, 32499), (1413, 15387), (2007, 10833), (3611, 6021), (4239, 5129)]