19982105

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27947}}^1$

素因数の和:27976

約数の個数: 16

約数和(自身を含む): 28171584

約数和(自身を除く): 8189479

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27947, 139735, 307417, 363311, 1537085, 1816555, 3996421, 19982105]

約数ペア:

[(1, 19982105), (5, 3996421), (11, 1816555), (13, 1537085), (55, 363311), (65, 307417), (143, 139735), (715, 27947)]