21000913312

素因数分解:

$2^5\times {\mathrm{73}}^1\times {\mathrm{257}}^1\times {\mathrm{34981}}^1$

素因数の和:35321

約数の個数: 48

約数和(自身を含む): 42076209672

約数和(自身を除く): 21075296360

約数列:

[1, 2, 4, 8, 16, 32, 73, 146, 257, 292, 514, 584, 1028, 1168, 2056, 2336, 4112, 8224, 18761, 34981, 37522, 69962, 75044, 139924, 150088, 279848, 300176, 559696, 600352, 1119392, 2553613, 5107226, 8990117, 10214452, 17980234, 20428904, 35960468, 40857808, 71920936, 81715616, 143841872, 287683744, 656278541, 1312557082, 2625114164, 5250228328, 10500456656, 21000913312]

約数ペア:

[(1, 21000913312), (2, 10500456656), (4, 5250228328), (8, 2625114164), (16, 1312557082), (32, 656278541), (73, 287683744), (146, 143841872), (257, 81715616), (292, 71920936), (514, 40857808), (584, 35960468), (1028, 20428904), (1168, 17980234), (2056, 10214452), (2336, 8990117), (4112, 5107226), (8224, 2553613), (18761, 1119392), (34981, 600352), (37522, 559696), (69962, 300176), (75044, 279848), (139924, 150088)]