19686865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{1361}}^1$

素因数の和:1640

約数の個数: 16

約数和(自身を含む): 25888896

約数和(自身を除く): 6202031

約数列:

[1, 5, 11, 55, 263, 1315, 1361, 2893, 6805, 14465, 14971, 74855, 357943, 1789715, 3937373, 19686865]

約数ペア:

[(1, 19686865), (5, 3937373), (11, 1789715), (55, 357943), (263, 74855), (1315, 14971), (1361, 14465), (2893, 6805)]