20515923

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 33244992

約数和(自身を除く): 12729069

約数列:

[1, 3, 9, 17, 27, 47, 51, 81, 141, 153, 317, 423, 459, 799, 951, 1269, 1377, 2397, 2853, 3807, 5389, 7191, 8559, 14899, 16167, 21573, 25677, 44697, 48501, 64719, 134091, 145503, 253283, 402273, 436509, 759849, 1206819, 2279547, 6838641, 20515923]

約数ペア:

[(1, 20515923), (3, 6838641), (9, 2279547), (17, 1206819), (27, 759849), (47, 436509), (51, 402273), (81, 253283), (141, 145503), (153, 134091), (317, 64719), (423, 48501), (459, 44697), (799, 25677), (951, 21573), (1269, 16167), (1377, 14899), (2397, 8559), (2853, 7191), (3807, 5389)]