257531456

素因数分解:

$2^6\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6317}}^1$

素因数の和:6356

約数の個数: 84

約数和(自身を含む): 640304028

約数和(自身を除く): 382772572

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 64, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 448, 637, 728, 784, 832, 1274, 1456, 1568, 2548, 2912, 3136, 5096, 5824, 6317, 10192, 12634, 20384, 25268, 40768, 44219, 50536, 82121, 88438, 101072, 164242, 176876, 202144, 309533, 328484, 353752, 404288, 574847, 619066, 656968, 707504, 1149694, 1238132, 1313936, 1415008, 2299388, 2476264, 2627872, 2830016, 4023929, 4598776, 4952528, 5255744, 8047858, 9197552, 9905056, 16095716, 18395104, 19810112, 32191432, 36790208, 64382864, 128765728, 257531456]

約数ペア:

[(1, 257531456), (2, 128765728), (4, 64382864), (7, 36790208), (8, 32191432), (13, 19810112), (14, 18395104), (16, 16095716), (26, 9905056), (28, 9197552), (32, 8047858), (49, 5255744), (52, 4952528), (56, 4598776), (64, 4023929), (91, 2830016), (98, 2627872), (104, 2476264), (112, 2299388), (182, 1415008), (196, 1313936), (208, 1238132), (224, 1149694), (364, 707504), (392, 656968), (416, 619066), (448, 574847), (637, 404288), (728, 353752), (784, 328484), (832, 309533), (1274, 202144), (1456, 176876), (1568, 164242), (2548, 101072), (2912, 88438), (3136, 82121), (5096, 50536), (5824, 44219), (6317, 40768), (10192, 25268), (12634, 20384)]