21387772

素因数分解:

$2^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{9203}}^1$

素因数の和:9297

約数の個数: 24

約数和(自身を含む): 43295616

約数和(自身を除く): 21907844

約数列:

[1, 2, 4, 7, 14, 28, 83, 166, 332, 581, 1162, 2324, 9203, 18406, 36812, 64421, 128842, 257684, 763849, 1527698, 3055396, 5346943, 10693886, 21387772]

約数ペア:

[(1, 21387772), (2, 10693886), (4, 5346943), (7, 3055396), (14, 1527698), (28, 763849), (83, 257684), (166, 128842), (332, 64421), (581, 36812), (1162, 18406), (2324, 9203)]