21880925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{317}}^1$

素因数の和:589

約数の個数: 24

約数和(自身を含む): 29810592

約数和(自身を除く): 7929667

約数列:

[1, 5, 11, 25, 55, 251, 275, 317, 1255, 1585, 2761, 3487, 6275, 7925, 13805, 17435, 69025, 79567, 87175, 397835, 875237, 1989175, 4376185, 21880925]

約数ペア:

[(1, 21880925), (5, 4376185), (11, 1989175), (25, 875237), (55, 397835), (251, 87175), (275, 79567), (317, 69025), (1255, 17435), (1585, 13805), (2761, 7925), (3487, 6275)]