640285408

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:301

約数の個数: 192

約数和(自身を含む): 1641185280

約数和(自身を除く): 1000899872

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 23, 28, 31, 32, 38, 46, 56, 62, 76, 92, 112, 124, 133, 152, 161, 184, 211, 217, 224, 248, 266, 304, 322, 368, 422, 434, 437, 496, 532, 589, 608, 644, 713, 736, 844, 868, 874, 992, 1064, 1178, 1288, 1426, 1477, 1688, 1736, 1748, 2128, 2356, 2576, 2852, 2954, 3059, 3376, 3472, 3496, 4009, 4123, 4256, 4712, 4853, 4991, 5152, 5704, 5908, 6118, 6541, 6752, 6944, 6992, 8018, 8246, 9424, 9706, 9982, 11408, 11816, 12236, 13082, 13547, 13984, 16036, 16492, 18848, 19412, 19964, 22816, 23632, 24472, 26164, 27094, 28063, 32072, 32984, 33971, 38824, 39928, 45787, 47264, 48944, 52328, 54188, 56126, 64144, 65968, 67942, 77648, 79856, 91574, 92207, 94829, 97888, 104656, 108376, 112252, 124279, 128288, 131936, 135884, 150443, 155296, 159712, 183148, 184414, 189658, 209312, 216752, 224504, 248558, 271768, 300886, 366296, 368828, 379316, 433504, 449008, 497116, 543536, 601772, 645449, 732592, 737656, 758632, 869953, 898016, 994232, 1053101, 1087072, 1203544, 1290898, 1465184, 1475312, 1517264, 1739906, 1988464, 2106202, 2407088, 2581796, 2858417, 2950624, 3034528, 3479812, 3976928, 4212404, 4814176, 5163592, 5716834, 6959624, 8424808, 10327184, 11433668, 13919248, 16849616, 20008919, 20654368, 22867336, 27838496, 33699232, 40017838, 45734672, 80035676, 91469344, 160071352, 320142704, 640285408]

約数ペア:

[(1, 640285408), (2, 320142704), (4, 160071352), (7, 91469344), (8, 80035676), (14, 45734672), (16, 40017838), (19, 33699232), (23, 27838496), (28, 22867336), (31, 20654368), (32, 20008919), (38, 16849616), (46, 13919248), (56, 11433668), (62, 10327184), (76, 8424808), (92, 6959624), (112, 5716834), (124, 5163592), (133, 4814176), (152, 4212404), (161, 3976928), (184, 3479812), (211, 3034528), (217, 2950624), (224, 2858417), (248, 2581796), (266, 2407088), (304, 2106202), (322, 1988464), (368, 1739906), (422, 1517264), (434, 1475312), (437, 1465184), (496, 1290898), (532, 1203544), (589, 1087072), (608, 1053101), (644, 994232), (713, 898016), (736, 869953), (844, 758632), (868, 737656), (874, 732592), (992, 645449), (1064, 601772), (1178, 543536), (1288, 497116), (1426, 449008), (1477, 433504), (1688, 379316), (1736, 368828), (1748, 366296), (2128, 300886), (2356, 271768), (2576, 248558), (2852, 224504), (2954, 216752), (3059, 209312), (3376, 189658), (3472, 184414), (3496, 183148), (4009, 159712), (4123, 155296), (4256, 150443), (4712, 135884), (4853, 131936), (4991, 128288), (5152, 124279), (5704, 112252), (5908, 108376), (6118, 104656), (6541, 97888), (6752, 94829), (6944, 92207), (6992, 91574), (8018, 79856), (8246, 77648), (9424, 67942), (9706, 65968), (9982, 64144), (11408, 56126), (11816, 54188), (12236, 52328), (13082, 48944), (13547, 47264), (13984, 45787), (16036, 39928), (16492, 38824), (18848, 33971), (19412, 32984), (19964, 32072), (22816, 28063), (23632, 27094), (24472, 26164)]