20870278

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{72973}}^1$

素因数の和:72999

約数の個数: 16

約数和(自身を含む): 36778896

約数和(自身を除く): 15908618

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 72973, 145946, 802703, 948649, 1605406, 1897298, 10435139, 20870278]

約数ペア:

[(1, 20870278), (2, 10435139), (11, 1897298), (13, 1605406), (22, 948649), (26, 802703), (143, 145946), (286, 72973)]