257430663

素因数分解:

$3^3\times 7^2\times {\mathrm{194581}}^1$

素因数の和:194604

約数の個数: 24

約数和(自身を含む): 443646960

約数和(自身を除く): 186216297

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 194581, 583743, 1362067, 1751229, 4086201, 5253687, 9534469, 12258603, 28603407, 36775809, 85810221, 257430663]

約数ペア:

[(1, 257430663), (3, 85810221), (7, 36775809), (9, 28603407), (21, 12258603), (27, 9534469), (49, 5253687), (63, 4086201), (147, 1751229), (189, 1362067), (441, 583743), (1323, 194581)]