207910881

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{401}}^1$

素因数の和:623

約数の個数: 40

約数和(自身を含む): 321620904

約数和(自身を除く): 113710023

約数列:

[1, 3, 9, 27, 37, 81, 111, 173, 333, 401, 519, 999, 1203, 1557, 2997, 3609, 4671, 6401, 10827, 14013, 14837, 19203, 32481, 44511, 57609, 69373, 133533, 172827, 208119, 400599, 518481, 624357, 1201797, 1873071, 2566801, 5619213, 7700403, 23101209, 69303627, 207910881]

約数ペア:

[(1, 207910881), (3, 69303627), (9, 23101209), (27, 7700403), (37, 5619213), (81, 2566801), (111, 1873071), (173, 1201797), (333, 624357), (401, 518481), (519, 400599), (999, 208119), (1203, 172827), (1557, 133533), (2997, 69373), (3609, 57609), (4671, 44511), (6401, 32481), (10827, 19203), (14013, 14837)]