21898805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4861}}^1$

素因数の和:4936

約数の個数: 16

約数和(自身を含む): 28355184

約数和(自身を除く): 6456379

約数列:

[1, 5, 17, 53, 85, 265, 901, 4505, 4861, 24305, 82637, 257633, 413185, 1288165, 4379761, 21898805]

約数ペア:

[(1, 21898805), (5, 4379761), (17, 1288165), (53, 413185), (85, 257633), (265, 82637), (901, 24305), (4505, 4861)]