20673185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 27965952

約数和(自身を除く): 7292767

約数列:

[1, 5, 13, 47, 65, 67, 101, 235, 335, 505, 611, 871, 1313, 3055, 3149, 4355, 4747, 6565, 6767, 15745, 23735, 33835, 40937, 61711, 87971, 204685, 308555, 318049, 439855, 1590245, 4134637, 20673185]

約数ペア:

[(1, 20673185), (5, 4134637), (13, 1590245), (47, 439855), (65, 318049), (67, 308555), (101, 204685), (235, 87971), (335, 61711), (505, 40937), (611, 33835), (871, 23735), (1313, 15745), (3055, 6767), (3149, 6565), (4355, 4747)]