291570237

素因数分解:

$3^2\times 7^4\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:268

約数の個数: 60

約数和(自身を含む): 499877664

約数和(自身を除く): 208307427

約数列:

[1, 3, 7, 9, 21, 49, 63, 103, 131, 147, 309, 343, 393, 441, 721, 917, 927, 1029, 1179, 2163, 2401, 2751, 3087, 5047, 6419, 6489, 7203, 8253, 13493, 15141, 19257, 21609, 35329, 40479, 44933, 45423, 57771, 94451, 105987, 121437, 134799, 247303, 283353, 314531, 317961, 404397, 661157, 741909, 850059, 943593, 1983471, 2225727, 2830779, 4628099, 5950413, 13884297, 32396693, 41652891, 97190079, 291570237]

約数ペア:

[(1, 291570237), (3, 97190079), (7, 41652891), (9, 32396693), (21, 13884297), (49, 5950413), (63, 4628099), (103, 2830779), (131, 2225727), (147, 1983471), (309, 943593), (343, 850059), (393, 741909), (441, 661157), (721, 404397), (917, 317961), (927, 314531), (1029, 283353), (1179, 247303), (2163, 134799), (2401, 121437), (2751, 105987), (3087, 94451), (5047, 57771), (6419, 45423), (6489, 44933), (7203, 40479), (8253, 35329), (13493, 21609), (15141, 19257)]