81945545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{3539}}^1$

素因数の和:3976

約数の個数: 16

約数和(自身を含む): 107559360

約数和(自身を除く): 25613815

約数列:

[1, 5, 11, 55, 421, 2105, 3539, 4631, 17695, 23155, 38929, 194645, 1489919, 7449595, 16389109, 81945545]

約数ペア:

[(1, 81945545), (5, 16389109), (11, 7449595), (55, 1489919), (421, 194645), (2105, 38929), (3539, 23155), (4631, 17695)]