21505648

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32783}}^1$

素因数の和:32832

約数の個数: 20

約数和(自身を含む): 42684768

約数和(自身を除く): 21179120

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32783, 65566, 131132, 262264, 524528, 1344103, 2688206, 5376412, 10752824, 21505648]

約数ペア:

[(1, 21505648), (2, 10752824), (4, 5376412), (8, 2688206), (16, 1344103), (41, 524528), (82, 262264), (164, 131132), (328, 65566), (656, 32783)]