21903739

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3259}}^1$

素因数の和:3330

約数の個数: 16

約数和(自身を含む): 26288640

約数和(自身を除く): 4384901

約数列:

[1, 11, 13, 47, 143, 517, 611, 3259, 6721, 35849, 42367, 153173, 466037, 1684903, 1991249, 21903739]

約数ペア:

[(1, 21903739), (11, 1991249), (13, 1684903), (47, 466037), (143, 153173), (517, 42367), (611, 35849), (3259, 6721)]