256646656

素因数分解:

$2^9\times 7^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:835

約数の個数: 80

約数和(自身を含む): 592685280

約数和(自身を除く): 336038624

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 101, 112, 128, 202, 224, 256, 404, 448, 512, 707, 709, 808, 896, 1414, 1418, 1616, 1792, 2828, 2836, 3232, 3584, 4963, 5656, 5672, 6464, 9926, 11312, 11344, 12928, 19852, 22624, 22688, 25856, 39704, 45248, 45376, 51712, 71609, 79408, 90496, 90752, 143218, 158816, 180992, 181504, 286436, 317632, 361984, 363008, 501263, 572872, 635264, 1002526, 1145744, 1270528, 2005052, 2291488, 2541056, 4010104, 4582976, 8020208, 9165952, 16040416, 18331904, 32080832, 36663808, 64161664, 128323328, 256646656]

約数ペア:

[(1, 256646656), (2, 128323328), (4, 64161664), (7, 36663808), (8, 32080832), (14, 18331904), (16, 16040416), (28, 9165952), (32, 8020208), (56, 4582976), (64, 4010104), (101, 2541056), (112, 2291488), (128, 2005052), (202, 1270528), (224, 1145744), (256, 1002526), (404, 635264), (448, 572872), (512, 501263), (707, 363008), (709, 361984), (808, 317632), (896, 286436), (1414, 181504), (1418, 180992), (1616, 158816), (1792, 143218), (2828, 90752), (2836, 90496), (3232, 79408), (3584, 71609), (4963, 51712), (5656, 45376), (5672, 45248), (6464, 39704), (9926, 25856), (11312, 22688), (11344, 22624), (12928, 19852)]