21183675

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{83}}^2$

素因数の和:220

約数の個数: 36

約数和(自身を含む): 36315384

約数和(自身を除く): 15131709

約数列:

[1, 3, 5, 15, 25, 41, 75, 83, 123, 205, 249, 415, 615, 1025, 1245, 2075, 3075, 3403, 6225, 6889, 10209, 17015, 20667, 34445, 51045, 85075, 103335, 172225, 255225, 282449, 516675, 847347, 1412245, 4236735, 7061225, 21183675]

約数ペア:

[(1, 21183675), (3, 7061225), (5, 4236735), (15, 1412245), (25, 847347), (41, 516675), (75, 282449), (83, 255225), (123, 172225), (205, 103335), (249, 85075), (415, 51045), (615, 34445), (1025, 20667), (1245, 17015), (2075, 10209), (3075, 6889), (3403, 6225)]