20283057560

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{255197}}^1$

素因数の和:257195

約数の個数: 32

約数和(自身を含む): 45660026160

約数和(自身を除く): 25376968600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19870, 39740, 79480, 255197, 510394, 1020788, 1275985, 2041576, 2551970, 5103940, 10207880, 507076439, 1014152878, 2028305756, 2535382195, 4056611512, 5070764390, 10141528780, 20283057560]

約数ペア:

[(1, 20283057560), (2, 10141528780), (4, 5070764390), (5, 4056611512), (8, 2535382195), (10, 2028305756), (20, 1014152878), (40, 507076439), (1987, 10207880), (3974, 5103940), (7948, 2551970), (9935, 2041576), (15896, 1275985), (19870, 1020788), (39740, 510394), (79480, 255197)]