257565

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 516096

約数和(自身を除く): 258531

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 223, 231, 385, 669, 1115, 1155, 1561, 2453, 3345, 4683, 7359, 7805, 12265, 17171, 23415, 36795, 51513, 85855, 257565]

約数ペア:

[(1, 257565), (3, 85855), (5, 51513), (7, 36795), (11, 23415), (15, 17171), (21, 12265), (33, 7805), (35, 7359), (55, 4683), (77, 3345), (105, 2453), (165, 1561), (223, 1155), (231, 1115), (385, 669)]