13490140

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1049}}^1$

素因数の和:1701

約数の個数: 24

約数和(自身を含む): 28400400

約数和(自身を除く): 14910260

約数列:

[1, 2, 4, 5, 10, 20, 643, 1049, 1286, 2098, 2572, 3215, 4196, 5245, 6430, 10490, 12860, 20980, 674507, 1349014, 2698028, 3372535, 6745070, 13490140]

約数ペア:

[(1, 13490140), (2, 6745070), (4, 3372535), (5, 2698028), (10, 1349014), (20, 674507), (643, 20980), (1049, 12860), (1286, 10490), (2098, 6430), (2572, 5245), (3215, 4196)]