20807720648

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:356

約数の個数: 256

約数和(自身を含む): 49787136000

約数和(自身を除く): 28979415352

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 26, 38, 44, 52, 71, 76, 88, 97, 104, 139, 142, 143, 152, 194, 209, 247, 278, 284, 286, 388, 418, 494, 556, 568, 572, 776, 781, 836, 923, 988, 1067, 1112, 1144, 1261, 1349, 1529, 1562, 1672, 1807, 1843, 1846, 1976, 2134, 2522, 2641, 2698, 2717, 3058, 3124, 3614, 3686, 3692, 4268, 5044, 5282, 5396, 5434, 6116, 6248, 6887, 7228, 7372, 7384, 8536, 9869, 10088, 10153, 10564, 10792, 10868, 12232, 13483, 13774, 13871, 14456, 14744, 14839, 17537, 19738, 19877, 20273, 20306, 21128, 21736, 23959, 26966, 27548, 27742, 29051, 29678, 34333, 35074, 39476, 39754, 40546, 40612, 47918, 53932, 55096, 55484, 58102, 59356, 68666, 70148, 75757, 78952, 79508, 81092, 81224, 89531, 95836, 107864, 108559, 110968, 116204, 118712, 128297, 130853, 137332, 140296, 148313, 151514, 159016, 162184, 175279, 179062, 187511, 191672, 192907, 217118, 232408, 256177, 256594, 261706, 263549, 274664, 296626, 303028, 350558, 358124, 375022, 377663, 385814, 434236, 512354, 513188, 523412, 527098, 593252, 606056, 701116, 716248, 750044, 755326, 771628, 868472, 957293, 984841, 1024708, 1026376, 1046824, 1054196, 1186504, 1402232, 1411267, 1439383, 1500088, 1510652, 1543256, 1701089, 1914586, 1928069, 1969682, 2049416, 2062621, 2108392, 2437643, 2817947, 2822534, 2878766, 3021304, 3330301, 3402178, 3829172, 3856138, 3939364, 4125242, 4875286, 5635894, 5645068, 5757532, 6660602, 6804356, 7658344, 7712276, 7878728, 8250484, 9750572, 10530223, 11271788, 11290136, 11515064, 12444809, 13321204, 13608712, 15424552, 16500968, 18188567, 18711979, 19501144, 21060446, 22543576, 24889618, 26642408, 26814073, 36377134, 36633311, 37423958, 42120892, 49779236, 53628146, 72754268, 73266622, 74847916, 84241784, 99558472, 107256292, 136892899, 145508536, 146533244, 149695832, 200074237, 214512584, 236451371, 273785798, 293066488, 400148474, 472902742, 547571596, 800296948, 945805484, 1095143192, 1600593896, 1891610968, 2600965081, 5201930162, 10403860324, 20807720648]

約数ペア:

[(1, 20807720648), (2, 10403860324), (4, 5201930162), (8, 2600965081), (11, 1891610968), (13, 1600593896), (19, 1095143192), (22, 945805484), (26, 800296948), (38, 547571596), (44, 472902742), (52, 400148474), (71, 293066488), (76, 273785798), (88, 236451371), (97, 214512584), (104, 200074237), (139, 149695832), (142, 146533244), (143, 145508536), (152, 136892899), (194, 107256292), (209, 99558472), (247, 84241784), (278, 74847916), (284, 73266622), (286, 72754268), (388, 53628146), (418, 49779236), (494, 42120892), (556, 37423958), (568, 36633311), (572, 36377134), (776, 26814073), (781, 26642408), (836, 24889618), (923, 22543576), (988, 21060446), (1067, 19501144), (1112, 18711979), (1144, 18188567), (1261, 16500968), (1349, 15424552), (1529, 13608712), (1562, 13321204), (1672, 12444809), (1807, 11515064), (1843, 11290136), (1846, 11271788), (1976, 10530223), (2134, 9750572), (2522, 8250484), (2641, 7878728), (2698, 7712276), (2717, 7658344), (3058, 6804356), (3124, 6660602), (3614, 5757532), (3686, 5645068), (3692, 5635894), (4268, 4875286), (5044, 4125242), (5282, 3939364), (5396, 3856138), (5434, 3829172), (6116, 3402178), (6248, 3330301), (6887, 3021304), (7228, 2878766), (7372, 2822534), (7384, 2817947), (8536, 2437643), (9869, 2108392), (10088, 2062621), (10153, 2049416), (10564, 1969682), (10792, 1928069), (10868, 1914586), (12232, 1701089), (13483, 1543256), (13774, 1510652), (13871, 1500088), (14456, 1439383), (14744, 1411267), (14839, 1402232), (17537, 1186504), (19738, 1054196), (19877, 1046824), (20273, 1026376), (20306, 1024708), (21128, 984841), (21736, 957293), (23959, 868472), (26966, 771628), (27548, 755326), (27742, 750044), (29051, 716248), (29678, 701116), (34333, 606056), (35074, 593252), (39476, 527098), (39754, 523412), (40546, 513188), (40612, 512354), (47918, 434236), (53932, 385814), (55096, 377663), (55484, 375022), (58102, 358124), (59356, 350558), (68666, 303028), (70148, 296626), (75757, 274664), (78952, 263549), (79508, 261706), (81092, 256594), (81224, 256177), (89531, 232408), (95836, 217118), (107864, 192907), (108559, 191672), (110968, 187511), (116204, 179062), (118712, 175279), (128297, 162184), (130853, 159016), (137332, 151514), (140296, 148313)]