21445193

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{3617}}^1$

素因数の和:3653

約数の個数: 18

約数和(自身を含む): 27428058

約数和(自身を除く): 5982865

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 3617, 5929, 25319, 39787, 177233, 278509, 437657, 1949563, 3063599, 21445193]

約数ペア:

[(1, 21445193), (7, 3063599), (11, 1949563), (49, 437657), (77, 278509), (121, 177233), (539, 39787), (847, 25319), (3617, 5929)]