640500480

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:504

約数の個数: 288

約数和(自身を含む): 2331141120

約数和(自身を除く): 1690640640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 43, 45, 48, 54, 60, 64, 72, 80, 86, 90, 96, 108, 120, 128, 129, 135, 144, 160, 172, 180, 192, 215, 216, 240, 256, 258, 270, 288, 320, 344, 360, 384, 387, 430, 431, 432, 480, 516, 540, 576, 640, 645, 688, 720, 768, 774, 860, 862, 864, 960, 1032, 1080, 1152, 1161, 1280, 1290, 1293, 1376, 1440, 1548, 1720, 1724, 1728, 1920, 1935, 2064, 2155, 2160, 2304, 2322, 2580, 2586, 2752, 2880, 3096, 3440, 3448, 3456, 3840, 3870, 3879, 4128, 4310, 4320, 4644, 5160, 5172, 5504, 5760, 5805, 6192, 6465, 6880, 6896, 6912, 7740, 7758, 8256, 8620, 8640, 9288, 10320, 10344, 11008, 11520, 11610, 11637, 12384, 12930, 13760, 13792, 15480, 15516, 16512, 17240, 17280, 18533, 18576, 19395, 20640, 20688, 23220, 23274, 24768, 25860, 27520, 27584, 30960, 31032, 33024, 34480, 34560, 37066, 37152, 38790, 41280, 41376, 46440, 46548, 49536, 51720, 55040, 55168, 55599, 58185, 61920, 62064, 68960, 74132, 74304, 77580, 82560, 82752, 92665, 92880, 93096, 99072, 103440, 110336, 111198, 116370, 123840, 124128, 137920, 148264, 148608, 155160, 165120, 165504, 166797, 185330, 185760, 186192, 206880, 222396, 232740, 247680, 248256, 275840, 277995, 296528, 297216, 310320, 331008, 333594, 370660, 371520, 372384, 413760, 444792, 465480, 495360, 496512, 500391, 551680, 555990, 593056, 620640, 667188, 741320, 743040, 744768, 827520, 833985, 889584, 930960, 993024, 1000782, 1111980, 1186112, 1241280, 1334376, 1482640, 1486080, 1489536, 1655040, 1667970, 1779168, 1861920, 2001564, 2223960, 2372224, 2482560, 2501955, 2668752, 2965280, 2979072, 3335940, 3558336, 3723840, 4003128, 4447920, 4744448, 4965120, 5003910, 5337504, 5930560, 6671880, 7116672, 7447680, 8006256, 8895840, 10007820, 10675008, 11861120, 13343760, 14233344, 14895360, 16012512, 17791680, 20015640, 21350016, 23722240, 26687520, 32025024, 35583360, 40031280, 42700032, 53375040, 64050048, 71166720, 80062560, 106750080, 128100096, 160125120, 213500160, 320250240, 640500480]

約数ペア:

[(1, 640500480), (2, 320250240), (3, 213500160), (4, 160125120), (5, 128100096), (6, 106750080), (8, 80062560), (9, 71166720), (10, 64050048), (12, 53375040), (15, 42700032), (16, 40031280), (18, 35583360), (20, 32025024), (24, 26687520), (27, 23722240), (30, 21350016), (32, 20015640), (36, 17791680), (40, 16012512), (43, 14895360), (45, 14233344), (48, 13343760), (54, 11861120), (60, 10675008), (64, 10007820), (72, 8895840), (80, 8006256), (86, 7447680), (90, 7116672), (96, 6671880), (108, 5930560), (120, 5337504), (128, 5003910), (129, 4965120), (135, 4744448), (144, 4447920), (160, 4003128), (172, 3723840), (180, 3558336), (192, 3335940), (215, 2979072), (216, 2965280), (240, 2668752), (256, 2501955), (258, 2482560), (270, 2372224), (288, 2223960), (320, 2001564), (344, 1861920), (360, 1779168), (384, 1667970), (387, 1655040), (430, 1489536), (431, 1486080), (432, 1482640), (480, 1334376), (516, 1241280), (540, 1186112), (576, 1111980), (640, 1000782), (645, 993024), (688, 930960), (720, 889584), (768, 833985), (774, 827520), (860, 744768), (862, 743040), (864, 741320), (960, 667188), (1032, 620640), (1080, 593056), (1152, 555990), (1161, 551680), (1280, 500391), (1290, 496512), (1293, 495360), (1376, 465480), (1440, 444792), (1548, 413760), (1720, 372384), (1724, 371520), (1728, 370660), (1920, 333594), (1935, 331008), (2064, 310320), (2155, 297216), (2160, 296528), (2304, 277995), (2322, 275840), (2580, 248256), (2586, 247680), (2752, 232740), (2880, 222396), (3096, 206880), (3440, 186192), (3448, 185760), (3456, 185330), (3840, 166797), (3870, 165504), (3879, 165120), (4128, 155160), (4310, 148608), (4320, 148264), (4644, 137920), (5160, 124128), (5172, 123840), (5504, 116370), (5760, 111198), (5805, 110336), (6192, 103440), (6465, 99072), (6880, 93096), (6896, 92880), (6912, 92665), (7740, 82752), (7758, 82560), (8256, 77580), (8620, 74304), (8640, 74132), (9288, 68960), (10320, 62064), (10344, 61920), (11008, 58185), (11520, 55599), (11610, 55168), (11637, 55040), (12384, 51720), (12930, 49536), (13760, 46548), (13792, 46440), (15480, 41376), (15516, 41280), (16512, 38790), (17240, 37152), (17280, 37066), (18533, 34560), (18576, 34480), (19395, 33024), (20640, 31032), (20688, 30960), (23220, 27584), (23274, 27520), (24768, 25860)]