19709680

素因数分解:

$2^4\times 5^1\times {\mathrm{246371}}^1$

素因数の和:246384

約数の個数: 20

約数和(自身を含む): 45825192

約数和(自身を除く): 26115512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246371, 492742, 985484, 1231855, 1970968, 2463710, 3941936, 4927420, 9854840, 19709680]

約数ペア:

[(1, 19709680), (2, 9854840), (4, 4927420), (5, 3941936), (8, 2463710), (10, 1970968), (16, 1231855), (20, 985484), (40, 492742), (80, 246371)]