20203185

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{28657}}^1$

素因数の和:28712

約数の個数: 16

約数和(自身を含む): 33014016

約数和(自身を除く): 12810831

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 28657, 85971, 143285, 429855, 1346879, 4040637, 6734395, 20203185]

約数ペア:

[(1, 20203185), (3, 6734395), (5, 4040637), (15, 1346879), (47, 429855), (141, 143285), (235, 85971), (705, 28657)]