20649153

素因数分解:

$3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1423}}^1$

素因数の和:2124

約数の個数: 16

約数和(自身を含む): 31533056

約数和(自身を除く): 10883903

約数列:

[1, 3, 7, 21, 691, 1423, 2073, 4269, 4837, 9961, 14511, 29883, 983293, 2949879, 6883051, 20649153]

約数ペア:

[(1, 20649153), (3, 6883051), (7, 2949879), (21, 983293), (691, 29883), (1423, 14511), (2073, 9961), (4269, 4837)]