257605911

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{239}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 402554880

約数和(自身を除く): 144948969

約数列:

[1, 3, 9, 23, 41, 69, 123, 127, 207, 239, 369, 381, 717, 943, 1143, 2151, 2829, 2921, 5207, 5497, 8487, 8763, 9799, 15621, 16491, 26289, 29397, 30353, 46863, 49473, 88191, 91059, 119761, 225377, 273177, 359283, 676131, 698119, 1077849, 1244473, 2028393, 2094357, 3733419, 6283071, 11200257, 28622879, 85868637, 257605911]

約数ペア:

[(1, 257605911), (3, 85868637), (9, 28622879), (23, 11200257), (41, 6283071), (69, 3733419), (123, 2094357), (127, 2028393), (207, 1244473), (239, 1077849), (369, 698119), (381, 676131), (717, 359283), (943, 273177), (1143, 225377), (2151, 119761), (2829, 91059), (2921, 88191), (5207, 49473), (5497, 46863), (8487, 30353), (8763, 29397), (9799, 26289), (15621, 16491)]