21394928

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10529}}^1$

素因数の和:10664

約数の個数: 20

約数和(自身を含む): 41783040

約数和(自身を除く): 20388112

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10529, 21058, 42116, 84232, 168464, 1337183, 2674366, 5348732, 10697464, 21394928]

約数ペア:

[(1, 21394928), (2, 10697464), (4, 5348732), (8, 2674366), (16, 1337183), (127, 168464), (254, 84232), (508, 42116), (1016, 21058), (2032, 10529)]