1987934720

素因数分解:

$2^9\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18059}}^1$

素因数の和:18125

約数の個数: 80

約数和(自身を含む): 4877500320

約数和(自身を除く): 2889565600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 512, 640, 688, 860, 1280, 1376, 1720, 2560, 2752, 3440, 5504, 6880, 11008, 13760, 18059, 22016, 27520, 36118, 55040, 72236, 90295, 110080, 144472, 180590, 288944, 361180, 577888, 722360, 776537, 1155776, 1444720, 1553074, 2311552, 2889440, 3106148, 3882685, 4623104, 5778880, 6212296, 7765370, 9246208, 11557760, 12424592, 15530740, 23115520, 24849184, 31061480, 46231040, 49698368, 62122960, 99396736, 124245920, 198793472, 248491840, 397586944, 496983680, 993967360, 1987934720]

約数ペア:

[(1, 1987934720), (2, 993967360), (4, 496983680), (5, 397586944), (8, 248491840), (10, 198793472), (16, 124245920), (20, 99396736), (32, 62122960), (40, 49698368), (43, 46231040), (64, 31061480), (80, 24849184), (86, 23115520), (128, 15530740), (160, 12424592), (172, 11557760), (215, 9246208), (256, 7765370), (320, 6212296), (344, 5778880), (430, 4623104), (512, 3882685), (640, 3106148), (688, 2889440), (860, 2311552), (1280, 1553074), (1376, 1444720), (1720, 1155776), (2560, 776537), (2752, 722360), (3440, 577888), (5504, 361180), (6880, 288944), (11008, 180590), (13760, 144472), (18059, 110080), (22016, 90295), (27520, 72236), (36118, 55040)]