256920832

素因数分解:

$2^8\times 7^1\times {\mathrm{311}}^1\times {\mathrm{461}}^1$

素因数の和:795

約数の個数: 72

約数和(自身を含む): 589260672

約数和(自身を除く): 332339840

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 311, 448, 461, 622, 896, 922, 1244, 1792, 1844, 2177, 2488, 3227, 3688, 4354, 4976, 6454, 7376, 8708, 9952, 12908, 14752, 17416, 19904, 25816, 29504, 34832, 39808, 51632, 59008, 69664, 79616, 103264, 118016, 139328, 143371, 206528, 278656, 286742, 413056, 557312, 573484, 826112, 1003597, 1146968, 2007194, 2293936, 4014388, 4587872, 8028776, 9175744, 16057552, 18351488, 32115104, 36702976, 64230208, 128460416, 256920832]

約数ペア:

[(1, 256920832), (2, 128460416), (4, 64230208), (7, 36702976), (8, 32115104), (14, 18351488), (16, 16057552), (28, 9175744), (32, 8028776), (56, 4587872), (64, 4014388), (112, 2293936), (128, 2007194), (224, 1146968), (256, 1003597), (311, 826112), (448, 573484), (461, 557312), (622, 413056), (896, 286742), (922, 278656), (1244, 206528), (1792, 143371), (1844, 139328), (2177, 118016), (2488, 103264), (3227, 79616), (3688, 69664), (4354, 59008), (4976, 51632), (6454, 39808), (7376, 34832), (8708, 29504), (9952, 25816), (12908, 19904), (14752, 17416)]