21458896

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78893}}^1$

素因数の和:78918

約数の個数: 20

約数和(自身を含む): 44022852

約数和(自身を除く): 22563956

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78893, 157786, 315572, 631144, 1262288, 1341181, 2682362, 5364724, 10729448, 21458896]

約数ペア:

[(1, 21458896), (2, 10729448), (4, 5364724), (8, 2682362), (16, 1341181), (17, 1262288), (34, 631144), (68, 315572), (136, 157786), (272, 78893)]