20720368

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{5039}}^1$

素因数の和:5304

約数の個数: 20

約数和(自身を含む): 40309920

約数和(自身を除く): 19589552

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 5039, 10078, 20156, 40312, 80624, 1295023, 2590046, 5180092, 10360184, 20720368]

約数ペア:

[(1, 20720368), (2, 10360184), (4, 5180092), (8, 2590046), (16, 1295023), (257, 80624), (514, 40312), (1028, 20156), (2056, 10078), (4112, 5039)]