20488725

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2221}}^1$

素因数の和:2278

約数の個数: 36

約数和(自身を含む): 37609572

約数和(自身を除く): 17120847

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2221, 3075, 6663, 9225, 11105, 19989, 33315, 55525, 91061, 99945, 166575, 273183, 455305, 499725, 819549, 1365915, 2276525, 4097745, 6829575, 20488725]

約数ペア:

[(1, 20488725), (3, 6829575), (5, 4097745), (9, 2276525), (15, 1365915), (25, 819549), (41, 499725), (45, 455305), (75, 273183), (123, 166575), (205, 99945), (225, 91061), (369, 55525), (615, 33315), (1025, 19989), (1845, 11105), (2221, 9225), (3075, 6663)]