21227475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16649}}^1$

素因数の和:16679

約数の個数: 24

約数和(自身を含む): 37162800

約数和(自身を除く): 15935325

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16649, 49947, 83245, 249735, 283033, 416225, 849099, 1248675, 1415165, 4245495, 7075825, 21227475]

約数ペア:

[(1, 21227475), (3, 7075825), (5, 4245495), (15, 1415165), (17, 1248675), (25, 849099), (51, 416225), (75, 283033), (85, 249735), (255, 83245), (425, 49947), (1275, 16649)]