640417232

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:317

約数の個数: 160

約数和(自身を含む): 1600397568

約数和(自身を除く): 959980336

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 43, 52, 53, 56, 86, 91, 104, 106, 112, 172, 182, 193, 208, 212, 301, 344, 364, 371, 386, 424, 559, 602, 688, 689, 728, 742, 772, 848, 1118, 1204, 1351, 1378, 1456, 1484, 1544, 2236, 2279, 2408, 2509, 2702, 2756, 2968, 3088, 3913, 4472, 4558, 4816, 4823, 5018, 5404, 5512, 5936, 7826, 8299, 8944, 9116, 9646, 10036, 10229, 10808, 11024, 15652, 15953, 16598, 17563, 18232, 19292, 20072, 20458, 21616, 29627, 31304, 31906, 33196, 35126, 36464, 38584, 40144, 40916, 58093, 59254, 62608, 63812, 66392, 70252, 71603, 77168, 81832, 107887, 116186, 118508, 127624, 132784, 132977, 140504, 143206, 163664, 207389, 215774, 232372, 237016, 255248, 265954, 281008, 286412, 414778, 431548, 439847, 464744, 474032, 531908, 572824, 755209, 829556, 863096, 879694, 929488, 930839, 1063816, 1145648, 1510418, 1659112, 1726192, 1759388, 1861678, 2127632, 3020836, 3078929, 3318224, 3518776, 3723356, 5718011, 6041672, 6157858, 7037552, 7446712, 11436022, 12083344, 12315716, 14893424, 22872044, 24631432, 40026077, 45744088, 49262864, 80052154, 91488176, 160104308, 320208616, 640417232]

約数ペア:

[(1, 640417232), (2, 320208616), (4, 160104308), (7, 91488176), (8, 80052154), (13, 49262864), (14, 45744088), (16, 40026077), (26, 24631432), (28, 22872044), (43, 14893424), (52, 12315716), (53, 12083344), (56, 11436022), (86, 7446712), (91, 7037552), (104, 6157858), (106, 6041672), (112, 5718011), (172, 3723356), (182, 3518776), (193, 3318224), (208, 3078929), (212, 3020836), (301, 2127632), (344, 1861678), (364, 1759388), (371, 1726192), (386, 1659112), (424, 1510418), (559, 1145648), (602, 1063816), (688, 930839), (689, 929488), (728, 879694), (742, 863096), (772, 829556), (848, 755209), (1118, 572824), (1204, 531908), (1351, 474032), (1378, 464744), (1456, 439847), (1484, 431548), (1544, 414778), (2236, 286412), (2279, 281008), (2408, 265954), (2509, 255248), (2702, 237016), (2756, 232372), (2968, 215774), (3088, 207389), (3913, 163664), (4472, 143206), (4558, 140504), (4816, 132977), (4823, 132784), (5018, 127624), (5404, 118508), (5512, 116186), (5936, 107887), (7826, 81832), (8299, 77168), (8944, 71603), (9116, 70252), (9646, 66392), (10036, 63812), (10229, 62608), (10808, 59254), (11024, 58093), (15652, 40916), (15953, 40144), (16598, 38584), (17563, 36464), (18232, 35126), (19292, 33196), (20072, 31906), (20458, 31304), (21616, 29627)]