20055440

素因数分解:

$2^4\times 5^1\times {\mathrm{250693}}^1$

素因数の和:250706

約数の個数: 20

約数和(自身を含む): 46629084

約数和(自身を除く): 26573644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 250693, 501386, 1002772, 1253465, 2005544, 2506930, 4011088, 5013860, 10027720, 20055440]

約数ペア:

[(1, 20055440), (2, 10027720), (4, 5013860), (5, 4011088), (8, 2506930), (10, 2005544), (16, 1253465), (20, 1002772), (40, 501386), (80, 250693)]