21831825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{17123}}^1$

素因数の和:17153

約数の個数: 24

約数和(自身を含む): 38220768

約数和(自身を除く): 16388943

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 17123, 51369, 85615, 256845, 291091, 428075, 873273, 1284225, 1455455, 4366365, 7277275, 21831825]

約数ペア:

[(1, 21831825), (3, 7277275), (5, 4366365), (15, 1455455), (17, 1284225), (25, 873273), (51, 428075), (75, 291091), (85, 256845), (255, 85615), (425, 51369), (1275, 17123)]