21186896

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77893}}^1$

素因数の和:77918

約数の個数: 20

約数和(自身を含む): 43464852

約数和(自身を除く): 22277956

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77893, 155786, 311572, 623144, 1246288, 1324181, 2648362, 5296724, 10593448, 21186896]

約数ペア:

[(1, 21186896), (2, 10593448), (4, 5296724), (8, 2648362), (16, 1324181), (17, 1246288), (34, 623144), (68, 311572), (136, 155786), (272, 77893)]