21271256

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20297}}^1$

素因数の和:20434

約数の個数: 16

約数和(自身を含む): 40190040

約数和(自身を除く): 18918784

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20297, 40594, 81188, 162376, 2658907, 5317814, 10635628, 21271256]

約数ペア:

[(1, 21271256), (2, 10635628), (4, 5317814), (8, 2658907), (131, 162376), (262, 81188), (524, 40594), (1048, 20297)]