21778955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23293}}^1$

素因数の和:23326

約数の個数: 16

約数和(自身を含む): 30189024

約数和(自身を除く): 8410069

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 23293, 116465, 256223, 395981, 1281115, 1979905, 4355791, 21778955]

約数ペア:

[(1, 21778955), (5, 4355791), (11, 1979905), (17, 1281115), (55, 395981), (85, 256223), (187, 116465), (935, 23293)]