27987057

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{227}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 49320960

約数和(自身を除く): 21333903

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 103, 133, 171, 227, 309, 399, 681, 721, 927, 1197, 1589, 1957, 2043, 2163, 4313, 4767, 5871, 6489, 12939, 13699, 14301, 17613, 23381, 30191, 38817, 41097, 70143, 90573, 123291, 163667, 210429, 271719, 444239, 491001, 1332717, 1473003, 3109673, 3998151, 9329019, 27987057]

約数ペア:

[(1, 27987057), (3, 9329019), (7, 3998151), (9, 3109673), (19, 1473003), (21, 1332717), (57, 491001), (63, 444239), (103, 271719), (133, 210429), (171, 163667), (227, 123291), (309, 90573), (399, 70143), (681, 41097), (721, 38817), (927, 30191), (1197, 23381), (1589, 17613), (1957, 14301), (2043, 13699), (2163, 12939), (4313, 6489), (4767, 5871)]