639741648

素因数分解:

$2^4\times 3^1\times 7^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 240

約数和(自身を含む): 2110448256

約数和(自身を除く): 1470706608

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 39, 42, 48, 49, 52, 56, 61, 78, 84, 91, 98, 104, 112, 122, 147, 156, 168, 182, 183, 196, 208, 244, 273, 294, 312, 336, 343, 364, 366, 392, 427, 488, 546, 588, 624, 637, 686, 728, 732, 784, 793, 854, 976, 1029, 1092, 1176, 1274, 1281, 1372, 1456, 1464, 1586, 1708, 1911, 2058, 2184, 2352, 2379, 2401, 2548, 2562, 2744, 2928, 2989, 3172, 3416, 3822, 4116, 4368, 4459, 4758, 4802, 5096, 5124, 5488, 5551, 5978, 6344, 6832, 7203, 7644, 8232, 8918, 8967, 9516, 9604, 10192, 10248, 11102, 11956, 12688, 13377, 14406, 15288, 16464, 16653, 16807, 17836, 17934, 19032, 19208, 20496, 20923, 22204, 23912, 26754, 28812, 30576, 31213, 33306, 33614, 35672, 35868, 38064, 38416, 38857, 41846, 44408, 47824, 50421, 53508, 57624, 62426, 62769, 66612, 67228, 71344, 71736, 77714, 83692, 88816, 93639, 100842, 107016, 115248, 116571, 124852, 125538, 133224, 134456, 143472, 146461, 155428, 167384, 187278, 201684, 214032, 218491, 233142, 249704, 251076, 266448, 268912, 271999, 292922, 310856, 334768, 374556, 403368, 436982, 439383, 466284, 499408, 502152, 543998, 585844, 621712, 655473, 749112, 806736, 815997, 873964, 878766, 932568, 1004304, 1025227, 1087996, 1171688, 1310946, 1498224, 1631994, 1747928, 1757532, 1865136, 1903993, 2050454, 2175992, 2343376, 2621892, 3075681, 3263988, 3495856, 3515064, 3807986, 4100908, 4351984, 5243784, 5711979, 6151362, 6527976, 7030128, 7615972, 8201816, 10487568, 11423958, 12302724, 13055952, 13327951, 15231944, 16403632, 22847916, 24605448, 26655902, 30463888, 39983853, 45695832, 49210896, 53311804, 79967706, 91391664, 106623608, 159935412, 213247216, 319870824, 639741648]

約数ペア:

[(1, 639741648), (2, 319870824), (3, 213247216), (4, 159935412), (6, 106623608), (7, 91391664), (8, 79967706), (12, 53311804), (13, 49210896), (14, 45695832), (16, 39983853), (21, 30463888), (24, 26655902), (26, 24605448), (28, 22847916), (39, 16403632), (42, 15231944), (48, 13327951), (49, 13055952), (52, 12302724), (56, 11423958), (61, 10487568), (78, 8201816), (84, 7615972), (91, 7030128), (98, 6527976), (104, 6151362), (112, 5711979), (122, 5243784), (147, 4351984), (156, 4100908), (168, 3807986), (182, 3515064), (183, 3495856), (196, 3263988), (208, 3075681), (244, 2621892), (273, 2343376), (294, 2175992), (312, 2050454), (336, 1903993), (343, 1865136), (364, 1757532), (366, 1747928), (392, 1631994), (427, 1498224), (488, 1310946), (546, 1171688), (588, 1087996), (624, 1025227), (637, 1004304), (686, 932568), (728, 878766), (732, 873964), (784, 815997), (793, 806736), (854, 749112), (976, 655473), (1029, 621712), (1092, 585844), (1176, 543998), (1274, 502152), (1281, 499408), (1372, 466284), (1456, 439383), (1464, 436982), (1586, 403368), (1708, 374556), (1911, 334768), (2058, 310856), (2184, 292922), (2352, 271999), (2379, 268912), (2401, 266448), (2548, 251076), (2562, 249704), (2744, 233142), (2928, 218491), (2989, 214032), (3172, 201684), (3416, 187278), (3822, 167384), (4116, 155428), (4368, 146461), (4459, 143472), (4758, 134456), (4802, 133224), (5096, 125538), (5124, 124852), (5488, 116571), (5551, 115248), (5978, 107016), (6344, 100842), (6832, 93639), (7203, 88816), (7644, 83692), (8232, 77714), (8918, 71736), (8967, 71344), (9516, 67228), (9604, 66612), (10192, 62769), (10248, 62426), (11102, 57624), (11956, 53508), (12688, 50421), (13377, 47824), (14406, 44408), (15288, 41846), (16464, 38857), (16653, 38416), (16807, 38064), (17836, 35868), (17934, 35672), (19032, 33614), (19208, 33306), (20496, 31213), (20923, 30576), (22204, 28812), (23912, 26754)]