18515744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{947}}^1$

素因数の和:1017

約数の個数: 48

約数和(自身を含む): 40134528

約数和(自身を除く): 21618784

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 94, 104, 188, 208, 376, 416, 611, 752, 947, 1222, 1504, 1894, 2444, 3788, 4888, 7576, 9776, 12311, 15152, 19552, 24622, 30304, 44509, 49244, 89018, 98488, 178036, 196976, 356072, 393952, 578617, 712144, 1157234, 1424288, 2314468, 4628936, 9257872, 18515744]

約数ペア:

[(1, 18515744), (2, 9257872), (4, 4628936), (8, 2314468), (13, 1424288), (16, 1157234), (26, 712144), (32, 578617), (47, 393952), (52, 356072), (94, 196976), (104, 178036), (188, 98488), (208, 89018), (376, 49244), (416, 44509), (611, 30304), (752, 24622), (947, 19552), (1222, 15152), (1504, 12311), (1894, 9776), (2444, 7576), (3788, 4888)]