27989680

素因数分解:

$2^4\times 5^1\times {\mathrm{349871}}^1$

素因数の和:349884

約数の個数: 20

約数和(自身を含む): 65076192

約数和(自身を除く): 37086512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349871, 699742, 1399484, 1749355, 2798968, 3498710, 5597936, 6997420, 13994840, 27989680]

約数ペア:

[(1, 27989680), (2, 13994840), (4, 6997420), (5, 5597936), (8, 3498710), (10, 2798968), (16, 1749355), (20, 1399484), (40, 699742), (80, 349871)]