20403439

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 23961600

約数和(自身を除く): 3558161

約数列:

[1, 7, 59, 127, 389, 413, 889, 2723, 7493, 22951, 49403, 52451, 160657, 345821, 2914777, 20403439]

約数ペア:

[(1, 20403439), (7, 2914777), (59, 345821), (127, 160657), (389, 52451), (413, 49403), (889, 22951), (2723, 7493)]