21393616

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78653}}^1$

素因数の和:78678

約数の個数: 20

約数和(自身を含む): 43888932

約数和(自身を除く): 22495316

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78653, 157306, 314612, 629224, 1258448, 1337101, 2674202, 5348404, 10696808, 21393616]

約数ペア:

[(1, 21393616), (2, 10696808), (4, 5348404), (8, 2674202), (16, 1337101), (17, 1258448), (34, 629224), (68, 314612), (136, 157306), (272, 78653)]