217566503

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{21569}}^1$

素因数の和:21718

約数の個数: 16

約数和(自身を含む): 273335040

約数和(自身を除く): 55768537

約数列:

[1, 7, 11, 77, 131, 917, 1441, 10087, 21569, 150983, 237259, 1660813, 2825539, 19778773, 31080929, 217566503]

約数ペア:

[(1, 217566503), (7, 31080929), (11, 19778773), (77, 2825539), (131, 1660813), (917, 237259), (1441, 150983), (10087, 21569)]