81700640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{613}}^1$

素因数の和:659

約数の個数: 144

約数和(自身を含む): 238126392

約数和(自身を除く): 156425752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 160, 170, 196, 224, 238, 245, 272, 280, 340, 392, 476, 490, 544, 560, 595, 613, 680, 784, 833, 952, 980, 1120, 1190, 1226, 1360, 1568, 1666, 1904, 1960, 2380, 2452, 2720, 3065, 3332, 3808, 3920, 4165, 4291, 4760, 4904, 6130, 6664, 7840, 8330, 8582, 9520, 9808, 10421, 12260, 13328, 16660, 17164, 19040, 19616, 20842, 21455, 24520, 26656, 30037, 33320, 34328, 41684, 42910, 49040, 52105, 60074, 66640, 68656, 72947, 83368, 85820, 98080, 104210, 120148, 133280, 137312, 145894, 150185, 166736, 171640, 208420, 240296, 291788, 300370, 333472, 343280, 364735, 416840, 480592, 510629, 583576, 600740, 686560, 729470, 833680, 961184, 1021258, 1167152, 1201480, 1458940, 1667360, 2042516, 2334304, 2402960, 2553145, 2917880, 4085032, 4805920, 5106290, 5835760, 8170064, 10212580, 11671520, 16340128, 20425160, 40850320, 81700640]

約数ペア:

[(1, 81700640), (2, 40850320), (4, 20425160), (5, 16340128), (7, 11671520), (8, 10212580), (10, 8170064), (14, 5835760), (16, 5106290), (17, 4805920), (20, 4085032), (28, 2917880), (32, 2553145), (34, 2402960), (35, 2334304), (40, 2042516), (49, 1667360), (56, 1458940), (68, 1201480), (70, 1167152), (80, 1021258), (85, 961184), (98, 833680), (112, 729470), (119, 686560), (136, 600740), (140, 583576), (160, 510629), (170, 480592), (196, 416840), (224, 364735), (238, 343280), (245, 333472), (272, 300370), (280, 291788), (340, 240296), (392, 208420), (476, 171640), (490, 166736), (544, 150185), (560, 145894), (595, 137312), (613, 133280), (680, 120148), (784, 104210), (833, 98080), (952, 85820), (980, 83368), (1120, 72947), (1190, 68656), (1226, 66640), (1360, 60074), (1568, 52105), (1666, 49040), (1904, 42910), (1960, 41684), (2380, 34328), (2452, 33320), (2720, 30037), (3065, 26656), (3332, 24520), (3808, 21455), (3920, 20842), (4165, 19616), (4291, 19040), (4760, 17164), (4904, 16660), (6130, 13328), (6664, 12260), (7840, 10421), (8330, 9808), (8582, 9520)]