18785660

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1913}}^1$

素因数の和:2413

約数の個数: 24

約数和(自身を含む): 39550896

約数和(自身を除く): 20765236

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1913, 1964, 2455, 3826, 4910, 7652, 9565, 9820, 19130, 38260, 939283, 1878566, 3757132, 4696415, 9392830, 18785660]

約数ペア:

[(1, 18785660), (2, 9392830), (4, 4696415), (5, 3757132), (10, 1878566), (20, 939283), (491, 38260), (982, 19130), (1913, 9820), (1964, 9565), (2455, 7652), (3826, 4910)]