20265147

素因数分解:

$3^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{347}}^1$

素因数の和:469

約数の個数: 40

約数和(自身を含む): 35033856

約数和(自身を除く): 14768709

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 103, 189, 309, 347, 567, 721, 927, 1041, 2163, 2429, 2781, 3123, 6489, 7287, 8343, 9369, 19467, 21861, 28107, 35741, 58401, 65583, 107223, 196749, 250187, 321669, 750561, 965007, 2251683, 2895021, 6755049, 20265147]

約数ペア:

[(1, 20265147), (3, 6755049), (7, 2895021), (9, 2251683), (21, 965007), (27, 750561), (63, 321669), (81, 250187), (103, 196749), (189, 107223), (309, 65583), (347, 58401), (567, 35741), (721, 28107), (927, 21861), (1041, 19467), (2163, 9369), (2429, 8343), (2781, 7287), (3123, 6489)]