19978712

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{192103}}^1$

素因数の和:192122

約数の個数: 16

約数和(自身を含む): 40341840

約数和(自身を除く): 20363128

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 192103, 384206, 768412, 1536824, 2497339, 4994678, 9989356, 19978712]

約数ペア:

[(1, 19978712), (2, 9989356), (4, 4994678), (8, 2497339), (13, 1536824), (26, 768412), (52, 384206), (104, 192103)]