256865739

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 376992000

約数和(自身を除く): 120126261

約数列:

[1, 3, 13, 39, 67, 197, 201, 499, 591, 871, 1497, 2561, 2613, 6487, 7683, 13199, 19461, 33433, 39597, 98303, 100299, 171587, 294909, 434629, 514761, 1277939, 1303887, 3833817, 6586301, 19758903, 85621913, 256865739]

約数ペア:

[(1, 256865739), (3, 85621913), (13, 19758903), (39, 6586301), (67, 3833817), (197, 1303887), (201, 1277939), (499, 514761), (591, 434629), (871, 294909), (1497, 171587), (2561, 100299), (2613, 98303), (6487, 39597), (7683, 33433), (13199, 19461)]