257642565

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1297}}^1$

素因数の和:1382

約数の個数: 64

約数和(自身を含む): 471018240

約数和(自身を除く): 213375675

約数列:

[1, 3, 5, 15, 17, 19, 41, 51, 57, 85, 95, 123, 205, 255, 285, 323, 615, 697, 779, 969, 1297, 1615, 2091, 2337, 3485, 3891, 3895, 4845, 6485, 10455, 11685, 13243, 19455, 22049, 24643, 39729, 53177, 66147, 66215, 73929, 110245, 123215, 159531, 198645, 265885, 330735, 369645, 418931, 797655, 904009, 1010363, 1256793, 2094655, 2712027, 3031089, 4520045, 5051815, 6283965, 13560135, 15155445, 17176171, 51528513, 85880855, 257642565]

約数ペア:

[(1, 257642565), (3, 85880855), (5, 51528513), (15, 17176171), (17, 15155445), (19, 13560135), (41, 6283965), (51, 5051815), (57, 4520045), (85, 3031089), (95, 2712027), (123, 2094655), (205, 1256793), (255, 1010363), (285, 904009), (323, 797655), (615, 418931), (697, 369645), (779, 330735), (969, 265885), (1297, 198645), (1615, 159531), (2091, 123215), (2337, 110245), (3485, 73929), (3891, 66215), (3895, 66147), (4845, 53177), (6485, 39729), (10455, 24643), (11685, 22049), (13243, 19455)]