20684848

素因数分解:

$2^4\times {\mathrm{491}}^1\times {\mathrm{2633}}^1$

素因数の和:3132

約数の個数: 20

約数和(自身を含む): 40173768

約数和(自身を除く): 19488920

約数列:

[1, 2, 4, 8, 16, 491, 982, 1964, 2633, 3928, 5266, 7856, 10532, 21064, 42128, 1292803, 2585606, 5171212, 10342424, 20684848]

約数ペア:

[(1, 20684848), (2, 10342424), (4, 5171212), (8, 2585606), (16, 1292803), (491, 42128), (982, 21064), (1964, 10532), (2633, 7856), (3928, 5266)]