18725020

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3643}}^1$

素因数の和:3909

約数の個数: 24

約数和(自身を含む): 39486384

約数和(自身を除く): 20761364

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3643, 5140, 7286, 14572, 18215, 36430, 72860, 936251, 1872502, 3745004, 4681255, 9362510, 18725020]

約数ペア:

[(1, 18725020), (2, 9362510), (4, 4681255), (5, 3745004), (10, 1872502), (20, 936251), (257, 72860), (514, 36430), (1028, 18215), (1285, 14572), (2570, 7286), (3643, 5140)]