28279305

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23612535

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 89, 115, 207, 267, 307, 345, 445, 801, 921, 1035, 1335, 1535, 2047, 2763, 4005, 4605, 6141, 7061, 10235, 13815, 18423, 21183, 27323, 30705, 35305, 63549, 81969, 92115, 105915, 136615, 245907, 317745, 409845, 628429, 1229535, 1885287, 3142145, 5655861, 9426435, 28279305]

約数ペア:

[(1, 28279305), (3, 9426435), (5, 5655861), (9, 3142145), (15, 1885287), (23, 1229535), (45, 628429), (69, 409845), (89, 317745), (115, 245907), (207, 136615), (267, 105915), (307, 92115), (345, 81969), (445, 63549), (801, 35305), (921, 30705), (1035, 27323), (1335, 21183), (1535, 18423), (2047, 13815), (2763, 10235), (4005, 7061), (4605, 6141)]