18980475

素因数分解:

$3^1\times 5^2\times {\mathrm{97}}^1\times {\mathrm{2609}}^1$

素因数の和:2719

約数の個数: 24

約数和(自身を含む): 31716720

約数和(自身を除く): 12736245

約数列:

[1, 3, 5, 15, 25, 75, 97, 291, 485, 1455, 2425, 2609, 7275, 7827, 13045, 39135, 65225, 195675, 253073, 759219, 1265365, 3796095, 6326825, 18980475]

約数ペア:

[(1, 18980475), (3, 6326825), (5, 3796095), (15, 1265365), (25, 759219), (75, 253073), (97, 195675), (291, 65225), (485, 39135), (1455, 13045), (2425, 7827), (2609, 7275)]