640666840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:170

約数の個数: 256

約数和(自身を含む): 1772928000

約数和(自身を除く): 1132261160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 29, 37, 40, 44, 46, 55, 58, 59, 74, 88, 92, 110, 115, 116, 118, 145, 148, 184, 185, 220, 230, 232, 236, 253, 290, 295, 296, 319, 370, 407, 440, 460, 472, 506, 580, 590, 638, 649, 667, 740, 814, 851, 920, 1012, 1073, 1160, 1180, 1265, 1276, 1298, 1334, 1357, 1480, 1595, 1628, 1702, 1711, 2024, 2035, 2146, 2183, 2360, 2530, 2552, 2596, 2668, 2714, 3190, 3245, 3256, 3335, 3404, 3422, 4070, 4255, 4292, 4366, 5060, 5192, 5336, 5365, 5428, 6380, 6490, 6670, 6785, 6808, 6844, 7337, 8140, 8510, 8555, 8584, 8732, 9361, 10120, 10730, 10856, 10915, 11803, 12760, 12980, 13340, 13570, 13688, 14674, 14927, 16280, 17020, 17110, 17464, 18722, 18821, 21460, 21830, 23606, 24013, 24679, 25960, 26680, 27140, 29348, 29854, 34040, 34220, 36685, 37444, 37642, 39353, 42920, 43660, 46805, 47212, 48026, 49358, 50209, 54280, 58696, 59015, 59708, 63307, 68440, 73370, 74635, 74888, 75284, 78706, 87320, 93610, 94105, 94424, 96052, 98716, 100418, 118030, 119416, 120065, 123395, 126614, 146740, 149270, 150568, 157412, 187220, 188210, 192104, 196765, 197432, 200836, 236060, 240130, 246790, 251045, 253228, 271469, 293480, 298540, 314824, 316535, 374440, 376420, 393530, 401672, 432883, 472120, 480260, 493580, 502090, 506456, 542938, 552299, 597080, 633070, 696377, 752840, 787060, 865766, 960520, 987160, 1004180, 1085876, 1104598, 1266140, 1357345, 1392754, 1456061, 1574120, 1731532, 2008360, 2164415, 2171752, 2209196, 2532280, 2714690, 2761495, 2785508, 2912122, 3463064, 3481885, 4328830, 4418392, 5429380, 5522990, 5571016, 5824244, 6963770, 7280305, 8657660, 10858760, 11045980, 11648488, 13927540, 14560610, 16016671, 17315320, 22091960, 27855080, 29121220, 32033342, 58242440, 64066684, 80083355, 128133368, 160166710, 320333420, 640666840]

約数ペア:

[(1, 640666840), (2, 320333420), (4, 160166710), (5, 128133368), (8, 80083355), (10, 64066684), (11, 58242440), (20, 32033342), (22, 29121220), (23, 27855080), (29, 22091960), (37, 17315320), (40, 16016671), (44, 14560610), (46, 13927540), (55, 11648488), (58, 11045980), (59, 10858760), (74, 8657660), (88, 7280305), (92, 6963770), (110, 5824244), (115, 5571016), (116, 5522990), (118, 5429380), (145, 4418392), (148, 4328830), (184, 3481885), (185, 3463064), (220, 2912122), (230, 2785508), (232, 2761495), (236, 2714690), (253, 2532280), (290, 2209196), (295, 2171752), (296, 2164415), (319, 2008360), (370, 1731532), (407, 1574120), (440, 1456061), (460, 1392754), (472, 1357345), (506, 1266140), (580, 1104598), (590, 1085876), (638, 1004180), (649, 987160), (667, 960520), (740, 865766), (814, 787060), (851, 752840), (920, 696377), (1012, 633070), (1073, 597080), (1160, 552299), (1180, 542938), (1265, 506456), (1276, 502090), (1298, 493580), (1334, 480260), (1357, 472120), (1480, 432883), (1595, 401672), (1628, 393530), (1702, 376420), (1711, 374440), (2024, 316535), (2035, 314824), (2146, 298540), (2183, 293480), (2360, 271469), (2530, 253228), (2552, 251045), (2596, 246790), (2668, 240130), (2714, 236060), (3190, 200836), (3245, 197432), (3256, 196765), (3335, 192104), (3404, 188210), (3422, 187220), (4070, 157412), (4255, 150568), (4292, 149270), (4366, 146740), (5060, 126614), (5192, 123395), (5336, 120065), (5365, 119416), (5428, 118030), (6380, 100418), (6490, 98716), (6670, 96052), (6785, 94424), (6808, 94105), (6844, 93610), (7337, 87320), (8140, 78706), (8510, 75284), (8555, 74888), (8584, 74635), (8732, 73370), (9361, 68440), (10120, 63307), (10730, 59708), (10856, 59015), (10915, 58696), (11803, 54280), (12760, 50209), (12980, 49358), (13340, 48026), (13570, 47212), (13688, 46805), (14674, 43660), (14927, 42920), (16280, 39353), (17020, 37642), (17110, 37444), (17464, 36685), (18722, 34220), (18821, 34040), (21460, 29854), (21830, 29348), (23606, 27140), (24013, 26680), (24679, 25960)]