640009440

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{63493}}^1$

素因数の和:63521

約数の個数: 144

約数和(自身を含む): 2496076128

約数和(自身を除く): 1856066688

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2520, 3360, 5040, 10080, 63493, 126986, 190479, 253972, 317465, 380958, 444451, 507944, 571437, 634930, 761916, 888902, 952395, 1015888, 1142874, 1269860, 1333353, 1523832, 1777804, 1904790, 2031776, 2222255, 2285748, 2539720, 2666706, 2857185, 3047664, 3555608, 3809580, 4000059, 4444510, 4571496, 5079440, 5333412, 5714370, 6095328, 6666765, 7111216, 7619160, 8000118, 8889020, 9142992, 10158880, 10666824, 11428740, 13333530, 14222432, 15238320, 16000236, 17778040, 18285984, 20000295, 21333648, 22857480, 26667060, 30476640, 32000472, 35556080, 40000590, 42667296, 45714960, 53334120, 64000944, 71112160, 80001180, 91429920, 106668240, 128001888, 160002360, 213336480, 320004720, 640009440]

約数ペア:

[(1, 640009440), (2, 320004720), (3, 213336480), (4, 160002360), (5, 128001888), (6, 106668240), (7, 91429920), (8, 80001180), (9, 71112160), (10, 64000944), (12, 53334120), (14, 45714960), (15, 42667296), (16, 40000590), (18, 35556080), (20, 32000472), (21, 30476640), (24, 26667060), (28, 22857480), (30, 21333648), (32, 20000295), (35, 18285984), (36, 17778040), (40, 16000236), (42, 15238320), (45, 14222432), (48, 13333530), (56, 11428740), (60, 10666824), (63, 10158880), (70, 9142992), (72, 8889020), (80, 8000118), (84, 7619160), (90, 7111216), (96, 6666765), (105, 6095328), (112, 5714370), (120, 5333412), (126, 5079440), (140, 4571496), (144, 4444510), (160, 4000059), (168, 3809580), (180, 3555608), (210, 3047664), (224, 2857185), (240, 2666706), (252, 2539720), (280, 2285748), (288, 2222255), (315, 2031776), (336, 1904790), (360, 1777804), (420, 1523832), (480, 1333353), (504, 1269860), (560, 1142874), (630, 1015888), (672, 952395), (720, 888902), (840, 761916), (1008, 634930), (1120, 571437), (1260, 507944), (1440, 444451), (1680, 380958), (2016, 317465), (2520, 253972), (3360, 190479), (5040, 126986), (10080, 63493)]