661560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 2052000

約数和(自身を除く): 1390440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 60, 74, 111, 120, 148, 149, 185, 222, 296, 298, 370, 444, 447, 555, 596, 740, 745, 888, 894, 1110, 1192, 1480, 1490, 1788, 2220, 2235, 2980, 3576, 4440, 4470, 5513, 5960, 8940, 11026, 16539, 17880, 22052, 27565, 33078, 44104, 55130, 66156, 82695, 110260, 132312, 165390, 220520, 330780, 661560]

約数ペア:

[(1, 661560), (2, 330780), (3, 220520), (4, 165390), (5, 132312), (6, 110260), (8, 82695), (10, 66156), (12, 55130), (15, 44104), (20, 33078), (24, 27565), (30, 22052), (37, 17880), (40, 16539), (60, 11026), (74, 8940), (111, 5960), (120, 5513), (148, 4470), (149, 4440), (185, 3576), (222, 2980), (296, 2235), (298, 2220), (370, 1788), (444, 1490), (447, 1480), (555, 1192), (596, 1110), (740, 894), (745, 888)]