640685472

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{19}}^3\times {\mathrm{139}}^1$

素因数の和:216

約数の個数: 192

約数和(自身を含む): 2043417600

約数和(自身を除く): 1402732128

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 19, 21, 24, 28, 32, 38, 42, 48, 56, 57, 76, 84, 96, 112, 114, 133, 139, 152, 168, 224, 228, 266, 278, 304, 336, 361, 399, 417, 456, 532, 556, 608, 672, 722, 798, 834, 912, 973, 1064, 1083, 1112, 1444, 1596, 1668, 1824, 1946, 2128, 2166, 2224, 2527, 2641, 2888, 2919, 3192, 3336, 3892, 4256, 4332, 4448, 5054, 5282, 5776, 5838, 6384, 6672, 6859, 7581, 7784, 7923, 8664, 10108, 10564, 11552, 11676, 12768, 13344, 13718, 15162, 15568, 15846, 17328, 18487, 20216, 20577, 21128, 23352, 27436, 30324, 31136, 31692, 34656, 36974, 40432, 41154, 42256, 46704, 48013, 50179, 54872, 55461, 60648, 63384, 73948, 80864, 82308, 84512, 93408, 96026, 100358, 109744, 110922, 121296, 126768, 144039, 147896, 150537, 164616, 192052, 200716, 219488, 221844, 242592, 253536, 288078, 295792, 301074, 329232, 351253, 384104, 401432, 443688, 576156, 591584, 602148, 658464, 702506, 768208, 802864, 887376, 953401, 1053759, 1152312, 1204296, 1405012, 1536416, 1605728, 1774752, 1906802, 2107518, 2304624, 2408592, 2810024, 2860203, 3813604, 4215036, 4609248, 4817184, 5620048, 5720406, 6673807, 7627208, 8430072, 11240096, 11440812, 13347614, 15254416, 16860144, 20021421, 22881624, 26695228, 30508832, 33720288, 40042842, 45763248, 53390456, 80085684, 91526496, 106780912, 160171368, 213561824, 320342736, 640685472]

約数ペア:

[(1, 640685472), (2, 320342736), (3, 213561824), (4, 160171368), (6, 106780912), (7, 91526496), (8, 80085684), (12, 53390456), (14, 45763248), (16, 40042842), (19, 33720288), (21, 30508832), (24, 26695228), (28, 22881624), (32, 20021421), (38, 16860144), (42, 15254416), (48, 13347614), (56, 11440812), (57, 11240096), (76, 8430072), (84, 7627208), (96, 6673807), (112, 5720406), (114, 5620048), (133, 4817184), (139, 4609248), (152, 4215036), (168, 3813604), (224, 2860203), (228, 2810024), (266, 2408592), (278, 2304624), (304, 2107518), (336, 1906802), (361, 1774752), (399, 1605728), (417, 1536416), (456, 1405012), (532, 1204296), (556, 1152312), (608, 1053759), (672, 953401), (722, 887376), (798, 802864), (834, 768208), (912, 702506), (973, 658464), (1064, 602148), (1083, 591584), (1112, 576156), (1444, 443688), (1596, 401432), (1668, 384104), (1824, 351253), (1946, 329232), (2128, 301074), (2166, 295792), (2224, 288078), (2527, 253536), (2641, 242592), (2888, 221844), (2919, 219488), (3192, 200716), (3336, 192052), (3892, 164616), (4256, 150537), (4332, 147896), (4448, 144039), (5054, 126768), (5282, 121296), (5776, 110922), (5838, 109744), (6384, 100358), (6672, 96026), (6859, 93408), (7581, 84512), (7784, 82308), (7923, 80864), (8664, 73948), (10108, 63384), (10564, 60648), (11552, 55461), (11676, 54872), (12768, 50179), (13344, 48013), (13718, 46704), (15162, 42256), (15568, 41154), (15846, 40432), (17328, 36974), (18487, 34656), (20216, 31692), (20577, 31136), (21128, 30324), (23352, 27436)]