21147225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25633}}^1$

素因数の和:25657

約数の個数: 24

約数和(自身を含む): 38143392

約数和(自身を除く): 16996167

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25633, 76899, 128165, 281963, 384495, 640825, 845889, 1409815, 1922475, 4229445, 7049075, 21147225]

約数ペア:

[(1, 21147225), (3, 7049075), (5, 4229445), (11, 1922475), (15, 1409815), (25, 845889), (33, 640825), (55, 384495), (75, 281963), (165, 128165), (275, 76899), (825, 25633)]