640506240

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{919}}^1$

素因数の和:966

約数の個数: 288

約数和(自身を含む): 2433740400

約数和(自身を除く): 1793234160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 121, 128, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 242, 264, 288, 320, 330, 352, 360, 363, 384, 396, 440, 480, 484, 495, 528, 576, 605, 640, 660, 704, 720, 726, 792, 880, 919, 960, 968, 990, 1056, 1089, 1152, 1210, 1320, 1408, 1440, 1452, 1584, 1760, 1815, 1838, 1920, 1936, 1980, 2112, 2178, 2420, 2640, 2757, 2880, 2904, 3168, 3520, 3630, 3676, 3872, 3960, 4224, 4356, 4595, 4840, 5280, 5445, 5514, 5760, 5808, 6336, 7040, 7260, 7352, 7744, 7920, 8271, 8712, 9190, 9680, 10109, 10560, 10890, 11028, 11616, 12672, 13785, 14520, 14704, 15488, 15840, 16542, 17424, 18380, 19360, 20218, 21120, 21780, 22056, 23232, 27570, 29040, 29408, 30327, 31680, 33084, 34848, 36760, 38720, 40436, 41355, 43560, 44112, 46464, 50545, 55140, 58080, 58816, 60654, 63360, 66168, 69696, 73520, 77440, 80872, 82710, 87120, 88224, 90981, 101090, 110280, 111199, 116160, 117632, 121308, 132336, 139392, 147040, 151635, 161744, 165420, 174240, 176448, 181962, 202180, 220560, 222398, 232320, 242616, 264672, 294080, 303270, 323488, 330840, 333597, 348480, 352896, 363924, 404360, 441120, 444796, 454905, 485232, 529344, 555995, 588160, 606540, 646976, 661680, 667194, 696960, 727848, 808720, 882240, 889592, 909810, 970464, 1000791, 1058688, 1111990, 1213080, 1293952, 1323360, 1334388, 1455696, 1617440, 1667985, 1764480, 1779184, 1819620, 1940928, 2001582, 2223980, 2426160, 2646720, 2668776, 2911392, 3234880, 3335970, 3558368, 3639240, 3881856, 4003164, 4447960, 4852320, 5003955, 5293440, 5337552, 5822784, 6469760, 6671940, 7116736, 7278480, 8006328, 8895920, 9704640, 10007910, 10675104, 11645568, 13343880, 14233472, 14556960, 16012656, 17791840, 19409280, 20015820, 21350208, 26687760, 29113920, 32025312, 35583680, 40031640, 42700416, 53375520, 58227840, 64050624, 71167360, 80063280, 106751040, 128101248, 160126560, 213502080, 320253120, 640506240]

約数ペア:

[(1, 640506240), (2, 320253120), (3, 213502080), (4, 160126560), (5, 128101248), (6, 106751040), (8, 80063280), (9, 71167360), (10, 64050624), (11, 58227840), (12, 53375520), (15, 42700416), (16, 40031640), (18, 35583680), (20, 32025312), (22, 29113920), (24, 26687760), (30, 21350208), (32, 20015820), (33, 19409280), (36, 17791840), (40, 16012656), (44, 14556960), (45, 14233472), (48, 13343880), (55, 11645568), (60, 10675104), (64, 10007910), (66, 9704640), (72, 8895920), (80, 8006328), (88, 7278480), (90, 7116736), (96, 6671940), (99, 6469760), (110, 5822784), (120, 5337552), (121, 5293440), (128, 5003955), (132, 4852320), (144, 4447960), (160, 4003164), (165, 3881856), (176, 3639240), (180, 3558368), (192, 3335970), (198, 3234880), (220, 2911392), (240, 2668776), (242, 2646720), (264, 2426160), (288, 2223980), (320, 2001582), (330, 1940928), (352, 1819620), (360, 1779184), (363, 1764480), (384, 1667985), (396, 1617440), (440, 1455696), (480, 1334388), (484, 1323360), (495, 1293952), (528, 1213080), (576, 1111990), (605, 1058688), (640, 1000791), (660, 970464), (704, 909810), (720, 889592), (726, 882240), (792, 808720), (880, 727848), (919, 696960), (960, 667194), (968, 661680), (990, 646976), (1056, 606540), (1089, 588160), (1152, 555995), (1210, 529344), (1320, 485232), (1408, 454905), (1440, 444796), (1452, 441120), (1584, 404360), (1760, 363924), (1815, 352896), (1838, 348480), (1920, 333597), (1936, 330840), (1980, 323488), (2112, 303270), (2178, 294080), (2420, 264672), (2640, 242616), (2757, 232320), (2880, 222398), (2904, 220560), (3168, 202180), (3520, 181962), (3630, 176448), (3676, 174240), (3872, 165420), (3960, 161744), (4224, 151635), (4356, 147040), (4595, 139392), (4840, 132336), (5280, 121308), (5445, 117632), (5514, 116160), (5760, 111199), (5808, 110280), (6336, 101090), (7040, 90981), (7260, 88224), (7352, 87120), (7744, 82710), (7920, 80872), (8271, 77440), (8712, 73520), (9190, 69696), (9680, 66168), (10109, 63360), (10560, 60654), (10890, 58816), (11028, 58080), (11616, 55140), (12672, 50545), (13785, 46464), (14520, 44112), (14704, 43560), (15488, 41355), (15840, 40436), (16542, 38720), (17424, 36760), (18380, 34848), (19360, 33084), (20218, 31680), (21120, 30327), (21780, 29408), (22056, 29040), (23232, 27570)]