20506475

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{6779}}^1$

素因数の和:6811

約数の個数: 18

約数和(自身を含む): 27953940

約数和(自身を除く): 7447465

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 3025, 6779, 33895, 74569, 169475, 372845, 820259, 1864225, 4101295, 20506475]

約数ペア:

[(1, 20506475), (5, 4101295), (11, 1864225), (25, 820259), (55, 372845), (121, 169475), (275, 74569), (605, 33895), (3025, 6779)]