20691460

素因数分解:

$2^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{2819}}^1$

素因数の和:3195

約数の個数: 24

約数和(自身を含む): 43585920

約数和(自身を除く): 22894460

約数列:

[1, 2, 4, 5, 10, 20, 367, 734, 1468, 1835, 2819, 3670, 5638, 7340, 11276, 14095, 28190, 56380, 1034573, 2069146, 4138292, 5172865, 10345730, 20691460]

約数ペア:

[(1, 20691460), (2, 10345730), (4, 5172865), (5, 4138292), (10, 2069146), (20, 1034573), (367, 56380), (734, 28190), (1468, 14095), (1835, 11276), (2819, 7340), (3670, 5638)]