21029872

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:841

約数の個数: 40

約数和(自身を含む): 42899040

約数和(自身を除く): 21869168

約数列:

[1, 2, 4, 8, 16, 29, 58, 61, 116, 122, 232, 244, 464, 488, 743, 976, 1486, 1769, 2972, 3538, 5944, 7076, 11888, 14152, 21547, 28304, 43094, 45323, 86188, 90646, 172376, 181292, 344752, 362584, 725168, 1314367, 2628734, 5257468, 10514936, 21029872]

約数ペア:

[(1, 21029872), (2, 10514936), (4, 5257468), (8, 2628734), (16, 1314367), (29, 725168), (58, 362584), (61, 344752), (116, 181292), (122, 172376), (232, 90646), (244, 86188), (464, 45323), (488, 43094), (743, 28304), (976, 21547), (1486, 14152), (1769, 11888), (2972, 7076), (3538, 5944)]