21211767

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1249}}^1$

素因数の和:1312

約数の個数: 32

約数和(自身を含む): 34200000

約数和(自身を除く): 12988233

約数列:

[1, 3, 9, 17, 27, 37, 51, 111, 153, 333, 459, 629, 999, 1249, 1887, 3747, 5661, 11241, 16983, 21233, 33723, 46213, 63699, 138639, 191097, 415917, 573291, 785621, 1247751, 2356863, 7070589, 21211767]

約数ペア:

[(1, 21211767), (3, 7070589), (9, 2356863), (17, 1247751), (27, 785621), (37, 573291), (51, 415917), (111, 191097), (153, 138639), (333, 63699), (459, 46213), (629, 33723), (999, 21233), (1249, 16983), (1887, 11241), (3747, 5661)]