21347265

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 35433216

約数和(自身を除く): 14085951

約数列:

[1, 3, 5, 15, 41, 103, 123, 205, 309, 337, 515, 615, 1011, 1545, 1685, 4223, 5055, 12669, 13817, 21115, 34711, 41451, 63345, 69085, 104133, 173555, 207255, 520665, 1423151, 4269453, 7115755, 21347265]

約数ペア:

[(1, 21347265), (3, 7115755), (5, 4269453), (15, 1423151), (41, 520665), (103, 207255), (123, 173555), (205, 104133), (309, 69085), (337, 63345), (515, 41451), (615, 34711), (1011, 21115), (1545, 13817), (1685, 12669), (4223, 5055)]