257420912

素因数分解:

$2^4\times 7^2\times {\mathrm{328343}}^1$

素因数の和:328365

約数の個数: 30

約数和(自身を含む): 580183848

約数和(自身を除く): 322762936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 328343, 656686, 1313372, 2298401, 2626744, 4596802, 5253488, 9193604, 16088807, 18387208, 32177614, 36774416, 64355228, 128710456, 257420912]

約数ペア:

[(1, 257420912), (2, 128710456), (4, 64355228), (7, 36774416), (8, 32177614), (14, 18387208), (16, 16088807), (28, 9193604), (49, 5253488), (56, 4596802), (98, 2626744), (112, 2298401), (196, 1313372), (392, 656686), (784, 328343)]