21377708

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11299}}^1$

素因数の和:11357

約数の個数: 24

約数和(自身を含む): 41764800

約数和(自身を除く): 20387092

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11299, 22598, 45196, 124289, 248578, 485857, 497156, 971714, 1943428, 5344427, 10688854, 21377708]

約数ペア:

[(1, 21377708), (2, 10688854), (4, 5344427), (11, 1943428), (22, 971714), (43, 497156), (44, 485857), (86, 248578), (172, 124289), (473, 45196), (946, 22598), (1892, 11299)]