28091518

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{383}}^1$

素因数の和:449

約数の個数: 48

約数和(自身を含む): 53968896

約数和(自身を除く): 25877378

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 169, 182, 217, 338, 383, 403, 434, 766, 806, 1183, 2366, 2681, 2821, 4979, 5239, 5362, 5642, 9958, 10478, 11873, 23746, 34853, 36673, 64727, 69706, 73346, 83111, 129454, 154349, 166222, 308698, 453089, 906178, 1080443, 2006537, 2160886, 4013074, 14045759, 28091518]

約数ペア:

[(1, 28091518), (2, 14045759), (7, 4013074), (13, 2160886), (14, 2006537), (26, 1080443), (31, 906178), (62, 453089), (91, 308698), (169, 166222), (182, 154349), (217, 129454), (338, 83111), (383, 73346), (403, 69706), (434, 64727), (766, 36673), (806, 34853), (1183, 23746), (2366, 11873), (2681, 10478), (2821, 9958), (4979, 5642), (5239, 5362)]