1687311

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:612

約数の個数: 20

約数和(自身を含む): 2593272

約数和(自身を除く): 905961

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 563, 999, 1689, 2997, 5067, 15201, 20831, 45603, 62493, 187479, 562437, 1687311]

約数ペア:

[(1, 1687311), (3, 562437), (9, 187479), (27, 62493), (37, 45603), (81, 20831), (111, 15201), (333, 5067), (563, 2997), (999, 1689)]