21238591

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:822

約数の個数: 16

約数和(自身を含む): 24403968

約数和(自身を除く): 3165377

約数列:

[1, 11, 23, 127, 253, 661, 1397, 2921, 7271, 15203, 32131, 83947, 167233, 923417, 1930781, 21238591]

約数ペア:

[(1, 21238591), (11, 1930781), (23, 923417), (127, 167233), (253, 83947), (661, 32131), (1397, 15203), (2921, 7271)]