66650840

素因数分解:

$2^3\times 5^1\times {\mathrm{1666271}}^1$

素因数の和:1666282

約数の個数: 16

約数和(自身を含む): 149964480

約数和(自身を除く): 83313640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1666271, 3332542, 6665084, 8331355, 13330168, 16662710, 33325420, 66650840]

約数ペア:

[(1, 66650840), (2, 33325420), (4, 16662710), (5, 13330168), (8, 8331355), (10, 6665084), (20, 3332542), (40, 1666271)]