20712783

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4463}}^1$

素因数の和:4503

約数の個数: 32

約数和(自身を含む): 35997696

約数和(自身を除く): 15284913

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4463, 4641, 13389, 31241, 58019, 75871, 93723, 174057, 227613, 406133, 531097, 986323, 1218399, 1593291, 2958969, 6904261, 20712783]

約数ペア:

[(1, 20712783), (3, 6904261), (7, 2958969), (13, 1593291), (17, 1218399), (21, 986323), (39, 531097), (51, 406133), (91, 227613), (119, 174057), (221, 93723), (273, 75871), (357, 58019), (663, 31241), (1547, 13389), (4463, 4641)]