21225159

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11393}}^1$

素因数の和:11428

約数の個数: 20

約数和(自身を含む): 33088176

約数和(自身を除く): 11863017

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11393, 34179, 102537, 262039, 307611, 786117, 922833, 2358351, 7075053, 21225159]

約数ペア:

[(1, 21225159), (3, 7075053), (9, 2358351), (23, 922833), (27, 786117), (69, 307611), (81, 262039), (207, 102537), (621, 34179), (1863, 11393)]