20990346

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{613}}^1$

素因数の和:1070

約数の個数: 32

約数和(自身を含む): 45386880

約数和(自身を除く): 24396534

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 439, 613, 878, 1226, 1317, 1839, 2634, 3678, 5707, 7969, 11414, 15938, 17121, 23907, 34242, 47814, 269107, 538214, 807321, 1614642, 3498391, 6996782, 10495173, 20990346]

約数ペア:

[(1, 20990346), (2, 10495173), (3, 6996782), (6, 3498391), (13, 1614642), (26, 807321), (39, 538214), (78, 269107), (439, 47814), (613, 34242), (878, 23907), (1226, 17121), (1317, 15938), (1839, 11414), (2634, 7969), (3678, 5707)]