21263572

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{43933}}^1$

素因数の和:43959

約数の個数: 18

約数和(自身を含む): 40902554

約数和(自身を除く): 19638982

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 43933, 87866, 175732, 483263, 966526, 1933052, 5315893, 10631786, 21263572]

約数ペア:

[(1, 21263572), (2, 10631786), (4, 5315893), (11, 1933052), (22, 966526), (44, 483263), (121, 175732), (242, 87866), (484, 43933)]