20215737

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 32696136

約数和(自身を除く): 12480399

約数列:

[1, 3, 9, 17, 27, 51, 53, 81, 153, 159, 277, 459, 477, 831, 901, 1377, 1431, 2493, 2703, 4293, 4709, 7479, 8109, 14127, 14681, 22437, 24327, 42381, 44043, 72981, 127143, 132129, 249577, 381429, 396387, 748731, 1189161, 2246193, 6738579, 20215737]

約数ペア:

[(1, 20215737), (3, 6738579), (9, 2246193), (17, 1189161), (27, 748731), (51, 396387), (53, 381429), (81, 249577), (153, 132129), (159, 127143), (277, 72981), (459, 44043), (477, 42381), (831, 24327), (901, 22437), (1377, 14681), (1431, 14127), (2493, 8109), (2703, 7479), (4293, 4709)]