20398534

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 34128864

約数和(自身を除く): 13730330

約数列:

[1, 2, 13, 26, 53, 106, 113, 131, 226, 262, 689, 1378, 1469, 1703, 2938, 3406, 5989, 6943, 11978, 13886, 14803, 29606, 77857, 90259, 155714, 180518, 192439, 384878, 784559, 1569118, 10199267, 20398534]

約数ペア:

[(1, 20398534), (2, 10199267), (13, 1569118), (26, 784559), (53, 384878), (106, 192439), (113, 180518), (131, 155714), (226, 90259), (262, 77857), (689, 29606), (1378, 14803), (1469, 13886), (1703, 11978), (2938, 6943), (3406, 5989)]