278503825

素因数分解:

$5^2\times {\mathrm{193}}^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 350086968

約数和(自身を除く): 71583143

約数列:

[1, 5, 25, 193, 197, 293, 965, 985, 1465, 4825, 4925, 7325, 38021, 56549, 57721, 190105, 282745, 288605, 950525, 1413725, 1443025, 11140153, 55700765, 278503825]

約数ペア:

[(1, 278503825), (5, 55700765), (25, 11140153), (193, 1443025), (197, 1413725), (293, 950525), (965, 288605), (985, 282745), (1465, 190105), (4825, 57721), (4925, 56549), (7325, 38021)]