20986874

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{2347}}^1$

素因数の和:2629

約数の個数: 16

約数和(自身を含む): 33473088

約数和(自身を除く): 12486214

約数列:

[1, 2, 17, 34, 263, 526, 2347, 4471, 4694, 8942, 39899, 79798, 617261, 1234522, 10493437, 20986874]

約数ペア:

[(1, 20986874), (2, 10493437), (17, 1234522), (34, 617261), (263, 79798), (526, 39899), (2347, 8942), (4471, 4694)]