20981552

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{27901}}^1$

素因数の和:27956

約数の個数: 20

約数和(自身を含む): 41518176

約数和(自身を除く): 20536624

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 27901, 55802, 111604, 223208, 446416, 1311347, 2622694, 5245388, 10490776, 20981552]

約数ペア:

[(1, 20981552), (2, 10490776), (4, 5245388), (8, 2622694), (16, 1311347), (47, 446416), (94, 223208), (188, 111604), (376, 55802), (752, 27901)]