19681376

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:85

約数の個数: 144

約数和(自身を含む): 50676192

約数和(自身を除く): 30994816

約数列:

[1, 2, 4, 8, 11, 13, 16, 17, 22, 23, 26, 32, 34, 44, 46, 52, 68, 88, 92, 104, 121, 136, 143, 176, 184, 187, 208, 221, 242, 253, 272, 286, 299, 352, 368, 374, 391, 416, 442, 484, 506, 544, 572, 598, 736, 748, 782, 884, 968, 1012, 1144, 1196, 1496, 1564, 1573, 1768, 1936, 2024, 2057, 2288, 2392, 2431, 2783, 2992, 3128, 3146, 3289, 3536, 3872, 4048, 4114, 4301, 4576, 4784, 4862, 5083, 5566, 5984, 6256, 6292, 6578, 7072, 8096, 8228, 8602, 9568, 9724, 10166, 11132, 12512, 12584, 13156, 16456, 17204, 19448, 20332, 22264, 25168, 26312, 26741, 32912, 34408, 36179, 38896, 40664, 44528, 47311, 50336, 52624, 53482, 55913, 65824, 68816, 72358, 77792, 81328, 89056, 94622, 105248, 106964, 111826, 137632, 144716, 162656, 189244, 213928, 223652, 289432, 378488, 427856, 447304, 578864, 615043, 756976, 855712, 894608, 1157728, 1230086, 1513952, 1789216, 2460172, 4920344, 9840688, 19681376]

約数ペア:

[(1, 19681376), (2, 9840688), (4, 4920344), (8, 2460172), (11, 1789216), (13, 1513952), (16, 1230086), (17, 1157728), (22, 894608), (23, 855712), (26, 756976), (32, 615043), (34, 578864), (44, 447304), (46, 427856), (52, 378488), (68, 289432), (88, 223652), (92, 213928), (104, 189244), (121, 162656), (136, 144716), (143, 137632), (176, 111826), (184, 106964), (187, 105248), (208, 94622), (221, 89056), (242, 81328), (253, 77792), (272, 72358), (286, 68816), (299, 65824), (352, 55913), (368, 53482), (374, 52624), (391, 50336), (416, 47311), (442, 44528), (484, 40664), (506, 38896), (544, 36179), (572, 34408), (598, 32912), (736, 26741), (748, 26312), (782, 25168), (884, 22264), (968, 20332), (1012, 19448), (1144, 17204), (1196, 16456), (1496, 13156), (1564, 12584), (1573, 12512), (1768, 11132), (1936, 10166), (2024, 9724), (2057, 9568), (2288, 8602), (2392, 8228), (2431, 8096), (2783, 7072), (2992, 6578), (3128, 6292), (3146, 6256), (3289, 5984), (3536, 5566), (3872, 5083), (4048, 4862), (4114, 4784), (4301, 4576)]