19905952

素因数分解:

$2^5\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:182

約数の個数: 72

約数和(自身を含む): 44341668

約数和(自身を除く): 24435716

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 53, 88, 97, 106, 121, 176, 194, 212, 242, 352, 388, 424, 484, 583, 776, 848, 968, 1067, 1166, 1552, 1696, 1936, 2134, 2332, 3104, 3872, 4268, 4664, 5141, 6413, 8536, 9328, 10282, 11737, 12826, 17072, 18656, 20564, 23474, 25652, 34144, 41128, 46948, 51304, 56551, 82256, 93896, 102608, 113102, 164512, 187792, 205216, 226204, 375584, 452408, 622061, 904816, 1244122, 1809632, 2488244, 4976488, 9952976, 19905952]

約数ペア:

[(1, 19905952), (2, 9952976), (4, 4976488), (8, 2488244), (11, 1809632), (16, 1244122), (22, 904816), (32, 622061), (44, 452408), (53, 375584), (88, 226204), (97, 205216), (106, 187792), (121, 164512), (176, 113102), (194, 102608), (212, 93896), (242, 82256), (352, 56551), (388, 51304), (424, 46948), (484, 41128), (583, 34144), (776, 25652), (848, 23474), (968, 20564), (1067, 18656), (1166, 17072), (1552, 12826), (1696, 11737), (1936, 10282), (2134, 9328), (2332, 8536), (3104, 6413), (3872, 5141), (4268, 4664)]