204230720

素因数分解:

$2^6\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1279}}^1$

素因数の和:1795

約数の個数: 56

約数和(自身を含む): 487680000

約数和(自身を除く): 283449280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 499, 998, 1279, 1996, 2495, 2558, 3992, 4990, 5116, 6395, 7984, 9980, 10232, 12790, 15968, 19960, 20464, 25580, 31936, 39920, 40928, 51160, 79840, 81856, 102320, 159680, 204640, 409280, 638221, 1276442, 2552884, 3191105, 5105768, 6382210, 10211536, 12764420, 20423072, 25528840, 40846144, 51057680, 102115360, 204230720]

約数ペア:

[(1, 204230720), (2, 102115360), (4, 51057680), (5, 40846144), (8, 25528840), (10, 20423072), (16, 12764420), (20, 10211536), (32, 6382210), (40, 5105768), (64, 3191105), (80, 2552884), (160, 1276442), (320, 638221), (499, 409280), (998, 204640), (1279, 159680), (1996, 102320), (2495, 81856), (2558, 79840), (3992, 51160), (4990, 40928), (5116, 39920), (6395, 31936), (7984, 25580), (9980, 20464), (10232, 19960), (12790, 15968)]