640736768

素因数分解:

$2^9\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:208

約数の個数: 160

約数和(自身を含む): 1550376960

約数和(自身を除く): 909640192

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 73, 79, 112, 124, 128, 146, 158, 217, 224, 248, 256, 292, 316, 434, 448, 496, 511, 512, 553, 584, 632, 868, 896, 992, 1022, 1106, 1168, 1264, 1736, 1792, 1984, 2044, 2212, 2263, 2336, 2449, 2528, 3472, 3584, 3968, 4088, 4424, 4526, 4672, 4898, 5056, 5767, 6944, 7936, 8176, 8848, 9052, 9344, 9796, 10112, 11534, 13888, 15841, 15872, 16352, 17143, 17696, 18104, 18688, 19592, 20224, 23068, 27776, 31682, 32704, 34286, 35392, 36208, 37376, 39184, 40369, 40448, 46136, 55552, 63364, 65408, 68572, 70784, 72416, 78368, 80738, 92272, 111104, 126728, 130816, 137144, 141568, 144832, 156736, 161476, 178777, 184544, 253456, 261632, 274288, 283136, 289664, 313472, 322952, 357554, 369088, 506912, 548576, 579328, 626944, 645904, 715108, 738176, 1013824, 1097152, 1158656, 1251439, 1253888, 1291808, 1430216, 1476352, 2027648, 2194304, 2502878, 2583616, 2860432, 2952704, 4055296, 4388608, 5005756, 5167232, 5720864, 8110592, 8777216, 10011512, 10334464, 11441728, 20023024, 20668928, 22883456, 40046048, 45766912, 80092096, 91533824, 160184192, 320368384, 640736768]

約数ペア:

[(1, 640736768), (2, 320368384), (4, 160184192), (7, 91533824), (8, 80092096), (14, 45766912), (16, 40046048), (28, 22883456), (31, 20668928), (32, 20023024), (56, 11441728), (62, 10334464), (64, 10011512), (73, 8777216), (79, 8110592), (112, 5720864), (124, 5167232), (128, 5005756), (146, 4388608), (158, 4055296), (217, 2952704), (224, 2860432), (248, 2583616), (256, 2502878), (292, 2194304), (316, 2027648), (434, 1476352), (448, 1430216), (496, 1291808), (511, 1253888), (512, 1251439), (553, 1158656), (584, 1097152), (632, 1013824), (868, 738176), (896, 715108), (992, 645904), (1022, 626944), (1106, 579328), (1168, 548576), (1264, 506912), (1736, 369088), (1792, 357554), (1984, 322952), (2044, 313472), (2212, 289664), (2263, 283136), (2336, 274288), (2449, 261632), (2528, 253456), (3472, 184544), (3584, 178777), (3968, 161476), (4088, 156736), (4424, 144832), (4526, 141568), (4672, 137144), (4898, 130816), (5056, 126728), (5767, 111104), (6944, 92272), (7936, 80738), (8176, 78368), (8848, 72416), (9052, 70784), (9344, 68572), (9796, 65408), (10112, 63364), (11534, 55552), (13888, 46136), (15841, 40448), (15872, 40369), (16352, 39184), (17143, 37376), (17696, 36208), (18104, 35392), (18688, 34286), (19592, 32704), (20224, 31682), (23068, 27776)]