19986044

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1951}}^1$

素因数の和:2165

約数の個数: 24

約数和(自身を含む): 37876608

約数和(自身を除く): 17890564

約数列:

[1, 2, 4, 13, 26, 52, 197, 394, 788, 1951, 2561, 3902, 5122, 7804, 10244, 25363, 50726, 101452, 384347, 768694, 1537388, 4996511, 9993022, 19986044]

約数ペア:

[(1, 19986044), (2, 9993022), (4, 4996511), (13, 1537388), (26, 768694), (52, 384347), (197, 101452), (394, 50726), (788, 25363), (1951, 10244), (2561, 7804), (3902, 5122)]