19809520

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1283}}^1$

素因数の和:1489

約数の個数: 40

約数和(自身を含む): 46331856

約数和(自身を除く): 26522336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1283, 1544, 1930, 2566, 3088, 3860, 5132, 6415, 7720, 10264, 12830, 15440, 20528, 25660, 51320, 102640, 247619, 495238, 990476, 1238095, 1980952, 2476190, 3961904, 4952380, 9904760, 19809520]

約数ペア:

[(1, 19809520), (2, 9904760), (4, 4952380), (5, 3961904), (8, 2476190), (10, 1980952), (16, 1238095), (20, 990476), (40, 495238), (80, 247619), (193, 102640), (386, 51320), (772, 25660), (965, 20528), (1283, 15440), (1544, 12830), (1930, 10264), (2566, 7720), (3088, 6415), (3860, 5132)]