2211979

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 2880000

約数和(自身を除く): 668021

約数列:

[1, 7, 11, 23, 77, 161, 253, 1249, 1771, 8743, 13739, 28727, 96173, 201089, 315997, 2211979]

約数ペア:

[(1, 2211979), (7, 315997), (11, 201089), (23, 96173), (77, 28727), (161, 13739), (253, 8743), (1249, 1771)]