81744860

素因数分解:

$2^2\times 5^1\times {\mathrm{743}}^1\times {\mathrm{5501}}^1$

素因数の和:6253

約数の個数: 24

約数和(自身を含む): 171926496

約数和(自身を除く): 90181636

約数列:

[1, 2, 4, 5, 10, 20, 743, 1486, 2972, 3715, 5501, 7430, 11002, 14860, 22004, 27505, 55010, 110020, 4087243, 8174486, 16348972, 20436215, 40872430, 81744860]

約数ペア:

[(1, 81744860), (2, 40872430), (4, 20436215), (5, 16348972), (10, 8174486), (20, 4087243), (743, 110020), (1486, 55010), (2972, 27505), (3715, 22004), (5501, 14860), (7430, 11002)]