640889568

素因数分解:

$2^5\times 3^2\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:438

約数の個数: 216

約数和(自身を含む): 2046956184

約数和(自身を除く): 1406066616

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 53, 66, 72, 88, 96, 99, 106, 121, 132, 144, 159, 176, 198, 212, 242, 264, 288, 318, 347, 352, 363, 396, 424, 477, 484, 528, 583, 636, 694, 726, 792, 848, 954, 968, 1041, 1056, 1089, 1166, 1272, 1388, 1452, 1584, 1696, 1749, 1908, 1936, 2082, 2178, 2332, 2544, 2776, 2904, 3123, 3168, 3498, 3816, 3817, 3872, 4164, 4356, 4664, 5088, 5247, 5552, 5808, 6246, 6413, 6996, 7632, 7634, 8328, 8712, 9328, 10494, 11104, 11451, 11616, 12492, 12826, 13992, 15264, 15268, 16656, 17424, 18391, 18656, 19239, 20988, 22902, 24984, 25652, 27984, 30536, 33312, 34353, 34848, 36782, 38478, 41976, 41987, 45804, 49968, 51304, 55173, 55968, 57717, 61072, 68706, 73564, 76956, 83952, 83974, 91608, 99936, 102608, 110346, 115434, 122144, 125961, 137412, 147128, 153912, 165519, 167904, 167948, 183216, 202301, 205216, 220692, 230868, 251922, 274824, 294256, 307824, 331038, 335896, 366432, 377883, 404602, 441384, 461736, 503844, 549648, 588512, 606903, 615648, 662076, 671792, 755766, 809204, 882768, 923472, 1007688, 1099296, 1213806, 1324152, 1343584, 1511532, 1618408, 1765536, 1820709, 1846944, 2015376, 2225311, 2427612, 2648304, 3023064, 3236816, 3641418, 4030752, 4450622, 4855224, 5296608, 6046128, 6473632, 6675933, 7282836, 8901244, 9710448, 12092256, 13351866, 14565672, 17802488, 19420896, 20027799, 26703732, 29131344, 35604976, 40055598, 53407464, 58262688, 71209952, 80111196, 106814928, 160222392, 213629856, 320444784, 640889568]

約数ペア:

[(1, 640889568), (2, 320444784), (3, 213629856), (4, 160222392), (6, 106814928), (8, 80111196), (9, 71209952), (11, 58262688), (12, 53407464), (16, 40055598), (18, 35604976), (22, 29131344), (24, 26703732), (32, 20027799), (33, 19420896), (36, 17802488), (44, 14565672), (48, 13351866), (53, 12092256), (66, 9710448), (72, 8901244), (88, 7282836), (96, 6675933), (99, 6473632), (106, 6046128), (121, 5296608), (132, 4855224), (144, 4450622), (159, 4030752), (176, 3641418), (198, 3236816), (212, 3023064), (242, 2648304), (264, 2427612), (288, 2225311), (318, 2015376), (347, 1846944), (352, 1820709), (363, 1765536), (396, 1618408), (424, 1511532), (477, 1343584), (484, 1324152), (528, 1213806), (583, 1099296), (636, 1007688), (694, 923472), (726, 882768), (792, 809204), (848, 755766), (954, 671792), (968, 662076), (1041, 615648), (1056, 606903), (1089, 588512), (1166, 549648), (1272, 503844), (1388, 461736), (1452, 441384), (1584, 404602), (1696, 377883), (1749, 366432), (1908, 335896), (1936, 331038), (2082, 307824), (2178, 294256), (2332, 274824), (2544, 251922), (2776, 230868), (2904, 220692), (3123, 205216), (3168, 202301), (3498, 183216), (3816, 167948), (3817, 167904), (3872, 165519), (4164, 153912), (4356, 147128), (4664, 137412), (5088, 125961), (5247, 122144), (5552, 115434), (5808, 110346), (6246, 102608), (6413, 99936), (6996, 91608), (7632, 83974), (7634, 83952), (8328, 76956), (8712, 73564), (9328, 68706), (10494, 61072), (11104, 57717), (11451, 55968), (11616, 55173), (12492, 51304), (12826, 49968), (13992, 45804), (15264, 41987), (15268, 41976), (16656, 38478), (17424, 36782), (18391, 34848), (18656, 34353), (19239, 33312), (20988, 30536), (22902, 27984), (24984, 25652)]