18420825

素因数分解:

$3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{3109}}^1$

素因数の和:3201

約数の個数: 24

約数和(自身を含む): 30851200

約数和(自身を除く): 12430375

約数列:

[1, 3, 5, 15, 25, 75, 79, 237, 395, 1185, 1975, 3109, 5925, 9327, 15545, 46635, 77725, 233175, 245611, 736833, 1228055, 3684165, 6140275, 18420825]

約数ペア:

[(1, 18420825), (3, 6140275), (5, 3684165), (15, 1228055), (25, 736833), (75, 245611), (79, 233175), (237, 77725), (395, 46635), (1185, 15545), (1975, 9327), (3109, 5925)]