257540864

素因数分解:

$2^8\times 7^4\times {\mathrm{419}}^1$

素因数の和:463

約数の個数: 90

約数和(自身を含む): 601150620

約数和(自身を除く): 343609756

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 343, 392, 419, 448, 686, 784, 838, 896, 1372, 1568, 1676, 1792, 2401, 2744, 2933, 3136, 3352, 4802, 5488, 5866, 6272, 6704, 9604, 10976, 11732, 12544, 13408, 19208, 20531, 21952, 23464, 26816, 38416, 41062, 43904, 46928, 53632, 76832, 82124, 87808, 93856, 107264, 143717, 153664, 164248, 187712, 287434, 307328, 328496, 375424, 574868, 614656, 656992, 750848, 1006019, 1149736, 1313984, 2012038, 2299472, 2627968, 4024076, 4598944, 5255936, 8048152, 9197888, 16096304, 18395776, 32192608, 36791552, 64385216, 128770432, 257540864]

約数ペア:

[(1, 257540864), (2, 128770432), (4, 64385216), (7, 36791552), (8, 32192608), (14, 18395776), (16, 16096304), (28, 9197888), (32, 8048152), (49, 5255936), (56, 4598944), (64, 4024076), (98, 2627968), (112, 2299472), (128, 2012038), (196, 1313984), (224, 1149736), (256, 1006019), (343, 750848), (392, 656992), (419, 614656), (448, 574868), (686, 375424), (784, 328496), (838, 307328), (896, 287434), (1372, 187712), (1568, 164248), (1676, 153664), (1792, 143717), (2401, 107264), (2744, 93856), (2933, 87808), (3136, 82124), (3352, 76832), (4802, 53632), (5488, 46928), (5866, 43904), (6272, 41062), (6704, 38416), (9604, 26816), (10976, 23464), (11732, 21952), (12544, 20531), (13408, 19208)]