19902970

素因数分解:

$2^1\times 5^1\times {\mathrm{1087}}^1\times {\mathrm{1831}}^1$

素因数の和:2925

約数の個数: 16

約数和(自身を含む): 35877888

約数和(自身を除く): 15974918

約数列:

[1, 2, 5, 10, 1087, 1831, 2174, 3662, 5435, 9155, 10870, 18310, 1990297, 3980594, 9951485, 19902970]

約数ペア:

[(1, 19902970), (2, 9951485), (5, 3980594), (10, 1990297), (1087, 18310), (1831, 10870), (2174, 9155), (3662, 5435)]