721347417

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{347}}^1\times {\mathrm{647}}^1$

素因数の和:1027

約数の個数: 64

約数和(自身を含む): 1298903040

約数和(自身を除く): 577555623

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 347, 357, 459, 647, 1041, 1071, 1941, 2429, 3123, 3213, 4529, 5823, 5899, 7287, 9369, 10999, 13587, 17469, 17697, 21861, 32997, 40761, 41293, 53091, 65583, 76993, 98991, 122283, 123879, 159273, 224509, 230979, 296973, 371637, 673527, 692937, 1114911, 1571563, 2020581, 2078811, 3816653, 4714689, 6061743, 11449959, 14144067, 26716571, 34349877, 42432201, 80149713, 103049631, 240449139, 721347417]

約数ペア:

[(1, 721347417), (3, 240449139), (7, 103049631), (9, 80149713), (17, 42432201), (21, 34349877), (27, 26716571), (51, 14144067), (63, 11449959), (119, 6061743), (153, 4714689), (189, 3816653), (347, 2078811), (357, 2020581), (459, 1571563), (647, 1114911), (1041, 692937), (1071, 673527), (1941, 371637), (2429, 296973), (3123, 230979), (3213, 224509), (4529, 159273), (5823, 123879), (5899, 122283), (7287, 98991), (9369, 76993), (10999, 65583), (13587, 53091), (17469, 41293), (17697, 40761), (21861, 32997)]