257656473

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 407630080

約数和(自身を除く): 149973607

約数列:

[1, 3, 9, 19, 43, 57, 67, 129, 171, 201, 387, 523, 603, 817, 1273, 1569, 2451, 2881, 3819, 4707, 7353, 8643, 9937, 11457, 22489, 25929, 29811, 35041, 54739, 67467, 89433, 105123, 164217, 202401, 315369, 427291, 492651, 665779, 1281873, 1506763, 1997337, 3845619, 4520289, 5992011, 13560867, 28628497, 85885491, 257656473]

約数ペア:

[(1, 257656473), (3, 85885491), (9, 28628497), (19, 13560867), (43, 5992011), (57, 4520289), (67, 3845619), (129, 1997337), (171, 1506763), (201, 1281873), (387, 665779), (523, 492651), (603, 427291), (817, 315369), (1273, 202401), (1569, 164217), (2451, 105123), (2881, 89433), (3819, 67467), (4707, 54739), (7353, 35041), (8643, 29811), (9937, 25929), (11457, 22489)]