65720205

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3469}}^1$

素因数の和:3901

約数の個数: 24

約数和(自身を含む): 114218520

約数和(自身を除く): 48498315

約数列:

[1, 3, 5, 9, 15, 45, 421, 1263, 2105, 3469, 3789, 6315, 10407, 17345, 18945, 31221, 52035, 156105, 1460449, 4381347, 7302245, 13144041, 21906735, 65720205]

約数ペア:

[(1, 65720205), (3, 21906735), (5, 13144041), (9, 7302245), (15, 4381347), (45, 1460449), (421, 156105), (1263, 52035), (2105, 31221), (3469, 18945), (3789, 17345), (6315, 10407)]