991290720

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{307}}^1$

素因数の和:394

約数の個数: 288

約数和(自身を含む): 3699489024

約数和(自身を除く): 2708198304

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 210, 217, 224, 240, 248, 280, 307, 310, 336, 372, 420, 434, 465, 480, 496, 560, 614, 620, 651, 672, 744, 840, 868, 921, 930, 961, 992, 1085, 1120, 1228, 1240, 1302, 1488, 1535, 1680, 1736, 1842, 1860, 1922, 2149, 2170, 2456, 2480, 2604, 2883, 2976, 3070, 3255, 3360, 3472, 3684, 3720, 3844, 4298, 4340, 4605, 4805, 4912, 4960, 5208, 5766, 6140, 6447, 6510, 6727, 6944, 7368, 7440, 7688, 8596, 8680, 9210, 9517, 9610, 9824, 10416, 10745, 11532, 12280, 12894, 13020, 13454, 14415, 14736, 14880, 15376, 17192, 17360, 18420, 19034, 19220, 20181, 20832, 21490, 23064, 24560, 25788, 26040, 26908, 28551, 28830, 29472, 30752, 32235, 33635, 34384, 34720, 36840, 38068, 38440, 40362, 42980, 46128, 47585, 49120, 51576, 52080, 53816, 57102, 57660, 64470, 66619, 67270, 68768, 73680, 76136, 76880, 80724, 85960, 92256, 95170, 100905, 103152, 104160, 107632, 114204, 115320, 128940, 133238, 134540, 142755, 147360, 152272, 153760, 161448, 171920, 190340, 199857, 201810, 206304, 215264, 228408, 230640, 257880, 266476, 269080, 285510, 295027, 304544, 322896, 333095, 343840, 380680, 399714, 403620, 456816, 461280, 515760, 532952, 538160, 571020, 590054, 645792, 666190, 761360, 799428, 807240, 885081, 913632, 999285, 1031520, 1065904, 1076320, 1142040, 1180108, 1332380, 1475135, 1522720, 1598856, 1614480, 1770162, 1998570, 2065189, 2131808, 2284080, 2360216, 2664760, 2950270, 3197712, 3228960, 3540324, 3997140, 4130378, 4425405, 4568160, 4720432, 5329520, 5900540, 6195567, 6395424, 7080648, 7994280, 8260756, 8850810, 9440864, 10325945, 10659040, 11801080, 12391134, 14161296, 15988560, 16521512, 17701620, 20651890, 23602160, 24782268, 28322592, 30977835, 31977120, 33043024, 35403240, 41303780, 47204320, 49564536, 61955670, 66086048, 70806480, 82607560, 99129072, 123911340, 141612960, 165215120, 198258144, 247822680, 330430240, 495645360, 991290720]

約数ペア:

[(1, 991290720), (2, 495645360), (3, 330430240), (4, 247822680), (5, 198258144), (6, 165215120), (7, 141612960), (8, 123911340), (10, 99129072), (12, 82607560), (14, 70806480), (15, 66086048), (16, 61955670), (20, 49564536), (21, 47204320), (24, 41303780), (28, 35403240), (30, 33043024), (31, 31977120), (32, 30977835), (35, 28322592), (40, 24782268), (42, 23602160), (48, 20651890), (56, 17701620), (60, 16521512), (62, 15988560), (70, 14161296), (80, 12391134), (84, 11801080), (93, 10659040), (96, 10325945), (105, 9440864), (112, 8850810), (120, 8260756), (124, 7994280), (140, 7080648), (155, 6395424), (160, 6195567), (168, 5900540), (186, 5329520), (210, 4720432), (217, 4568160), (224, 4425405), (240, 4130378), (248, 3997140), (280, 3540324), (307, 3228960), (310, 3197712), (336, 2950270), (372, 2664760), (420, 2360216), (434, 2284080), (465, 2131808), (480, 2065189), (496, 1998570), (560, 1770162), (614, 1614480), (620, 1598856), (651, 1522720), (672, 1475135), (744, 1332380), (840, 1180108), (868, 1142040), (921, 1076320), (930, 1065904), (961, 1031520), (992, 999285), (1085, 913632), (1120, 885081), (1228, 807240), (1240, 799428), (1302, 761360), (1488, 666190), (1535, 645792), (1680, 590054), (1736, 571020), (1842, 538160), (1860, 532952), (1922, 515760), (2149, 461280), (2170, 456816), (2456, 403620), (2480, 399714), (2604, 380680), (2883, 343840), (2976, 333095), (3070, 322896), (3255, 304544), (3360, 295027), (3472, 285510), (3684, 269080), (3720, 266476), (3844, 257880), (4298, 230640), (4340, 228408), (4605, 215264), (4805, 206304), (4912, 201810), (4960, 199857), (5208, 190340), (5766, 171920), (6140, 161448), (6447, 153760), (6510, 152272), (6727, 147360), (6944, 142755), (7368, 134540), (7440, 133238), (7688, 128940), (8596, 115320), (8680, 114204), (9210, 107632), (9517, 104160), (9610, 103152), (9824, 100905), (10416, 95170), (10745, 92256), (11532, 85960), (12280, 80724), (12894, 76880), (13020, 76136), (13454, 73680), (14415, 68768), (14736, 67270), (14880, 66619), (15376, 64470), (17192, 57660), (17360, 57102), (18420, 53816), (19034, 52080), (19220, 51576), (20181, 49120), (20832, 47585), (21490, 46128), (23064, 42980), (24560, 40362), (25788, 38440), (26040, 38068), (26908, 36840), (28551, 34720), (28830, 34384), (29472, 33635), (30752, 32235)]