640452960

素因数分解:

$2^5\times 3^3\times 5^1\times 7^1\times {\mathrm{21179}}^1$

素因数の和:21210

約数の個数: 192

約数和(自身を含む): 2561932800

約数和(自身を除く): 1921479840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 210, 216, 224, 240, 252, 270, 280, 288, 315, 336, 360, 378, 420, 432, 480, 504, 540, 560, 630, 672, 720, 756, 840, 864, 945, 1008, 1080, 1120, 1260, 1440, 1512, 1680, 1890, 2016, 2160, 2520, 3024, 3360, 3780, 4320, 5040, 6048, 7560, 10080, 15120, 21179, 30240, 42358, 63537, 84716, 105895, 127074, 148253, 169432, 190611, 211790, 254148, 296506, 317685, 338864, 381222, 423580, 444759, 508296, 571833, 593012, 635370, 677728, 741265, 762444, 847160, 889518, 953055, 1016592, 1143666, 1186024, 1270740, 1334277, 1482530, 1524888, 1694320, 1779036, 1906110, 2033184, 2223795, 2287332, 2372048, 2541480, 2668554, 2859165, 2965060, 3049776, 3388640, 3558072, 3812220, 4002831, 4447590, 4574664, 4744096, 5082960, 5337108, 5718330, 5930120, 6099552, 6671385, 7116144, 7624440, 8005662, 8895180, 9149328, 10165920, 10674216, 11436660, 11860240, 13342770, 14232288, 15248880, 16011324, 17790360, 18298656, 20014155, 21348432, 22873320, 23720480, 26685540, 30497760, 32022648, 35580720, 40028310, 42696864, 45746640, 53371080, 64045296, 71161440, 80056620, 91493280, 106742160, 128090592, 160113240, 213484320, 320226480, 640452960]

約数ペア:

[(1, 640452960), (2, 320226480), (3, 213484320), (4, 160113240), (5, 128090592), (6, 106742160), (7, 91493280), (8, 80056620), (9, 71161440), (10, 64045296), (12, 53371080), (14, 45746640), (15, 42696864), (16, 40028310), (18, 35580720), (20, 32022648), (21, 30497760), (24, 26685540), (27, 23720480), (28, 22873320), (30, 21348432), (32, 20014155), (35, 18298656), (36, 17790360), (40, 16011324), (42, 15248880), (45, 14232288), (48, 13342770), (54, 11860240), (56, 11436660), (60, 10674216), (63, 10165920), (70, 9149328), (72, 8895180), (80, 8005662), (84, 7624440), (90, 7116144), (96, 6671385), (105, 6099552), (108, 5930120), (112, 5718330), (120, 5337108), (126, 5082960), (135, 4744096), (140, 4574664), (144, 4447590), (160, 4002831), (168, 3812220), (180, 3558072), (189, 3388640), (210, 3049776), (216, 2965060), (224, 2859165), (240, 2668554), (252, 2541480), (270, 2372048), (280, 2287332), (288, 2223795), (315, 2033184), (336, 1906110), (360, 1779036), (378, 1694320), (420, 1524888), (432, 1482530), (480, 1334277), (504, 1270740), (540, 1186024), (560, 1143666), (630, 1016592), (672, 953055), (720, 889518), (756, 847160), (840, 762444), (864, 741265), (945, 677728), (1008, 635370), (1080, 593012), (1120, 571833), (1260, 508296), (1440, 444759), (1512, 423580), (1680, 381222), (1890, 338864), (2016, 317685), (2160, 296506), (2520, 254148), (3024, 211790), (3360, 190611), (3780, 169432), (4320, 148253), (5040, 127074), (6048, 105895), (7560, 84716), (10080, 63537), (15120, 42358), (21179, 30240)]