20887955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12251}}^1$

素因数の和:12298

約数の個数: 16

約数和(自身を含む): 28228608

約数和(自身を除く): 7340653

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 12251, 61255, 134761, 379781, 673805, 1898905, 4177591, 20887955]

約数ペア:

[(1, 20887955), (5, 4177591), (11, 1898905), (31, 673805), (55, 379781), (155, 134761), (341, 61255), (1705, 12251)]