20788684

素因数分解:

$2^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{4729}}^1$

素因数の和:4897

約数の個数: 24

約数和(自身を含む): 41851040

約数和(自身を除く): 21062356

約数列:

[1, 2, 4, 7, 14, 28, 157, 314, 628, 1099, 2198, 4396, 4729, 9458, 18916, 33103, 66206, 132412, 742453, 1484906, 2969812, 5197171, 10394342, 20788684]

約数ペア:

[(1, 20788684), (2, 10394342), (4, 5197171), (7, 2969812), (14, 1484906), (28, 742453), (157, 132412), (314, 66206), (628, 33103), (1099, 18916), (2198, 9458), (4396, 4729)]