21105173656

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{186481}}^1$

素因数の和:186584

約数の個数: 64

約数和(自身を含む): 47261998080

約数和(自身を除く): 26156824424

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 47, 56, 86, 94, 172, 188, 301, 329, 344, 376, 602, 658, 1204, 1316, 2021, 2408, 2632, 4042, 8084, 14147, 16168, 28294, 56588, 113176, 186481, 372962, 745924, 1305367, 1491848, 2610734, 5221468, 8018683, 8764607, 10442936, 16037366, 17529214, 32074732, 35058428, 56130781, 61352249, 64149464, 70116856, 112261562, 122704498, 224523124, 245408996, 376878101, 449046248, 490817992, 753756202, 1507512404, 2638146707, 3015024808, 5276293414, 10552586828, 21105173656]

約数ペア:

[(1, 21105173656), (2, 10552586828), (4, 5276293414), (7, 3015024808), (8, 2638146707), (14, 1507512404), (28, 753756202), (43, 490817992), (47, 449046248), (56, 376878101), (86, 245408996), (94, 224523124), (172, 122704498), (188, 112261562), (301, 70116856), (329, 64149464), (344, 61352249), (376, 56130781), (602, 35058428), (658, 32074732), (1204, 17529214), (1316, 16037366), (2021, 10442936), (2408, 8764607), (2632, 8018683), (4042, 5221468), (8084, 2610734), (14147, 1491848), (16168, 1305367), (28294, 745924), (56588, 372962), (113176, 186481)]