28820320

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:188

約数の個数: 96

約数和(自身を含む): 71850240

約数和(自身を除く): 43029920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 59, 71, 80, 86, 118, 142, 160, 172, 215, 236, 284, 295, 344, 355, 430, 472, 568, 590, 688, 710, 860, 944, 1136, 1180, 1376, 1420, 1720, 1888, 2272, 2360, 2537, 2840, 3053, 3440, 4189, 4720, 5074, 5680, 6106, 6880, 8378, 9440, 10148, 11360, 12212, 12685, 15265, 16756, 20296, 20945, 24424, 25370, 30530, 33512, 40592, 41890, 48848, 50740, 61060, 67024, 81184, 83780, 97696, 101480, 122120, 134048, 167560, 180127, 202960, 244240, 335120, 360254, 405920, 488480, 670240, 720508, 900635, 1441016, 1801270, 2882032, 3602540, 5764064, 7205080, 14410160, 28820320]

約数ペア:

[(1, 28820320), (2, 14410160), (4, 7205080), (5, 5764064), (8, 3602540), (10, 2882032), (16, 1801270), (20, 1441016), (32, 900635), (40, 720508), (43, 670240), (59, 488480), (71, 405920), (80, 360254), (86, 335120), (118, 244240), (142, 202960), (160, 180127), (172, 167560), (215, 134048), (236, 122120), (284, 101480), (295, 97696), (344, 83780), (355, 81184), (430, 67024), (472, 61060), (568, 50740), (590, 48848), (688, 41890), (710, 40592), (860, 33512), (944, 30530), (1136, 25370), (1180, 24424), (1376, 20945), (1420, 20296), (1720, 16756), (1888, 15265), (2272, 12685), (2360, 12212), (2537, 11360), (2840, 10148), (3053, 9440), (3440, 8378), (4189, 6880), (4720, 6106), (5074, 5680)]