280704256

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:248

約数の個数: 108

約数和(自身を含む): 665738976

約数和(自身を除く): 385034720

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 163, 217, 224, 248, 256, 326, 434, 448, 496, 652, 868, 896, 961, 992, 1141, 1304, 1736, 1792, 1922, 1984, 2282, 2608, 3472, 3844, 3968, 4564, 5053, 5216, 6727, 6944, 7688, 7936, 9128, 10106, 10432, 13454, 13888, 15376, 18256, 20212, 20864, 26908, 27776, 30752, 35371, 36512, 40424, 41728, 53816, 55552, 61504, 70742, 73024, 80848, 107632, 123008, 141484, 146048, 156643, 161696, 215264, 246016, 282968, 292096, 313286, 323392, 430528, 565936, 626572, 646784, 861056, 1096501, 1131872, 1253144, 1293568, 1722112, 2193002, 2263744, 2506288, 4386004, 4527488, 5012576, 8772008, 9054976, 10025152, 17544016, 20050304, 35088032, 40100608, 70176064, 140352128, 280704256]

約数ペア:

[(1, 280704256), (2, 140352128), (4, 70176064), (7, 40100608), (8, 35088032), (14, 20050304), (16, 17544016), (28, 10025152), (31, 9054976), (32, 8772008), (56, 5012576), (62, 4527488), (64, 4386004), (112, 2506288), (124, 2263744), (128, 2193002), (163, 1722112), (217, 1293568), (224, 1253144), (248, 1131872), (256, 1096501), (326, 861056), (434, 646784), (448, 626572), (496, 565936), (652, 430528), (868, 323392), (896, 313286), (961, 292096), (992, 282968), (1141, 246016), (1304, 215264), (1736, 161696), (1792, 156643), (1922, 146048), (1984, 141484), (2282, 123008), (2608, 107632), (3472, 80848), (3844, 73024), (3968, 70742), (4564, 61504), (5053, 55552), (5216, 53816), (6727, 41728), (6944, 40424), (7688, 36512), (7936, 35371), (9128, 30752), (10106, 27776), (10432, 26908), (13454, 20864), (13888, 20212), (15376, 18256)]