20656470015

素因数分解:

$3^3\times 5^1\times {\mathrm{1889}}^1\times {\mathrm{81001}}^1$

素因数の和:82904

約数の個数: 32

約数和(自身を含む): 36742507200

約数和(自身を除く): 16086037185

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 1889, 5667, 9445, 17001, 28335, 51003, 81001, 85005, 243003, 255015, 405005, 729009, 1215015, 2187027, 3645045, 10935135, 153010889, 459032667, 765054445, 1377098001, 2295163335, 4131294003, 6885490005, 20656470015]

約数ペア:

[(1, 20656470015), (3, 6885490005), (5, 4131294003), (9, 2295163335), (15, 1377098001), (27, 765054445), (45, 459032667), (135, 153010889), (1889, 10935135), (5667, 3645045), (9445, 2187027), (17001, 1215015), (28335, 729009), (51003, 405005), (81001, 255015), (85005, 243003)]