20813012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{2377}}^1$

素因数の和:2591

約数の個数: 24

約数和(自身を含む): 39950400

約数和(自身を除く): 19137388

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 796, 2189, 2377, 4378, 4754, 8756, 9508, 26147, 52294, 104588, 473023, 946046, 1892092, 5203253, 10406506, 20813012]

約数ペア:

[(1, 20813012), (2, 10406506), (4, 5203253), (11, 1892092), (22, 946046), (44, 473023), (199, 104588), (398, 52294), (796, 26147), (2189, 9508), (2377, 8756), (4378, 4754)]