25918820

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{2003}}^1$

素因数の和:2659

約数の個数: 24

約数和(自身を含む): 54540864

約数和(自身を除く): 28622044

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2003, 2588, 3235, 4006, 6470, 8012, 10015, 12940, 20030, 40060, 1295941, 2591882, 5183764, 6479705, 12959410, 25918820]

約数ペア:

[(1, 25918820), (2, 12959410), (4, 6479705), (5, 5183764), (10, 2591882), (20, 1295941), (647, 40060), (1294, 20030), (2003, 12940), (2588, 10015), (3235, 8012), (4006, 6470)]