66561280

素因数分解:

$2^8\times 5^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:519

約数の個数: 72

約数和(自身を含む): 160965000

約数和(自身を除く): 94403720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 256, 298, 320, 349, 596, 640, 698, 745, 1192, 1280, 1396, 1490, 1745, 2384, 2792, 2980, 3490, 4768, 5584, 5960, 6980, 9536, 11168, 11920, 13960, 19072, 22336, 23840, 27920, 38144, 44672, 47680, 52001, 55840, 89344, 95360, 104002, 111680, 190720, 208004, 223360, 260005, 416008, 446720, 520010, 832016, 1040020, 1664032, 2080040, 3328064, 4160080, 6656128, 8320160, 13312256, 16640320, 33280640, 66561280]

約数ペア:

[(1, 66561280), (2, 33280640), (4, 16640320), (5, 13312256), (8, 8320160), (10, 6656128), (16, 4160080), (20, 3328064), (32, 2080040), (40, 1664032), (64, 1040020), (80, 832016), (128, 520010), (149, 446720), (160, 416008), (256, 260005), (298, 223360), (320, 208004), (349, 190720), (596, 111680), (640, 104002), (698, 95360), (745, 89344), (1192, 55840), (1280, 52001), (1396, 47680), (1490, 44672), (1745, 38144), (2384, 27920), (2792, 23840), (2980, 22336), (3490, 19072), (4768, 13960), (5584, 11920), (5960, 11168), (6980, 9536)]