18517220

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{2579}}^1$

素因数の和:2947

約数の個数: 24

約数和(自身を含む): 39009600

約数和(自身を除く): 20492380

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 2579, 3590, 5158, 7180, 10316, 12895, 25790, 51580, 925861, 1851722, 3703444, 4629305, 9258610, 18517220]

約数ペア:

[(1, 18517220), (2, 9258610), (4, 4629305), (5, 3703444), (10, 1851722), (20, 925861), (359, 51580), (718, 25790), (1436, 12895), (1795, 10316), (2579, 7180), (3590, 5158)]