20989352

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{33211}}^1$

素因数の和:33296

約数の個数: 16

約数和(自身を含む): 39854400

約数和(自身を除く): 18865048

約数列:

[1, 2, 4, 8, 79, 158, 316, 632, 33211, 66422, 132844, 265688, 2623669, 5247338, 10494676, 20989352]

約数ペア:

[(1, 20989352), (2, 10494676), (4, 5247338), (8, 2623669), (79, 265688), (158, 132844), (316, 66422), (632, 33211)]