19156780

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3727}}^1$

素因数の和:3993

約数の個数: 24

約数和(自身を含む): 40396608

約数和(自身を除く): 21239828

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3727, 5140, 7454, 14908, 18635, 37270, 74540, 957839, 1915678, 3831356, 4789195, 9578390, 19156780]

約数ペア:

[(1, 19156780), (2, 9578390), (4, 4789195), (5, 3831356), (10, 1915678), (20, 957839), (257, 74540), (514, 37270), (1028, 18635), (1285, 14908), (2570, 7454), (3727, 5140)]