277856817

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{6761}}^1$

素因数の和:6893

約数の個数: 32

約数和(自身を含む): 450078720

約数和(自身を除く): 172221903

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 721, 1957, 2163, 5871, 6761, 13699, 20283, 41097, 47327, 128459, 141981, 385377, 696383, 899213, 2089149, 2697639, 4874681, 13231277, 14624043, 39693831, 92618939, 277856817]

約数ペア:

[(1, 277856817), (3, 92618939), (7, 39693831), (19, 14624043), (21, 13231277), (57, 4874681), (103, 2697639), (133, 2089149), (309, 899213), (399, 696383), (721, 385377), (1957, 141981), (2163, 128459), (5871, 47327), (6761, 41097), (13699, 20283)]