21225941

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 4054699

約数列:

[1, 11, 23, 29, 121, 253, 263, 319, 667, 2783, 2893, 3509, 6049, 7337, 7627, 31823, 66539, 80707, 83897, 175421, 731929, 922867, 1929631, 21225941]

約数ペア:

[(1, 21225941), (11, 1929631), (23, 922867), (29, 731929), (121, 175421), (253, 83897), (263, 80707), (319, 66539), (667, 31823), (2783, 7627), (2893, 7337), (3509, 6049)]