21193425

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8563}}^1$

素因数の和:8590

約数の個数: 36

約数和(自身を含む): 41415504

約数和(自身を除く): 20222079

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8563, 25689, 42815, 77067, 94193, 128445, 214075, 282579, 385335, 470965, 642225, 847737, 1412895, 1926675, 2354825, 4238685, 7064475, 21193425]

約数ペア:

[(1, 21193425), (3, 7064475), (5, 4238685), (9, 2354825), (11, 1926675), (15, 1412895), (25, 847737), (33, 642225), (45, 470965), (55, 385335), (75, 282579), (99, 214075), (165, 128445), (225, 94193), (275, 77067), (495, 42815), (825, 25689), (2475, 8563)]