16689020

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2521}}^1$

素因数の和:2861

約数の個数: 24

約数和(自身を含む): 35166768

約数和(自身を除く): 18477748

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 2521, 3310, 5042, 6620, 10084, 12605, 25210, 50420, 834451, 1668902, 3337804, 4172255, 8344510, 16689020]

約数ペア:

[(1, 16689020), (2, 8344510), (4, 4172255), (5, 3337804), (10, 1668902), (20, 834451), (331, 50420), (662, 25210), (1324, 12605), (1655, 10084), (2521, 6620), (3310, 5042)]