20387860

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10093}}^1$

素因数の和:10203

約数の個数: 24

約数和(自身を含む): 43242696

約数和(自身を除く): 22854836

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10093, 20186, 40372, 50465, 100930, 201860, 1019393, 2038786, 4077572, 5096965, 10193930, 20387860]

約数ペア:

[(1, 20387860), (2, 10193930), (4, 5096965), (5, 4077572), (10, 2038786), (20, 1019393), (101, 201860), (202, 100930), (404, 50465), (505, 40372), (1010, 20186), (2020, 10093)]