397845

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{421}}^1$

素因数の和:442

約数の個数: 32

約数和(自身を含む): 810240

約数和(自身を除く): 412395

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 421, 945, 1263, 2105, 2947, 3789, 6315, 8841, 11367, 14735, 18945, 26523, 44205, 56835, 79569, 132615, 397845]

約数ペア:

[(1, 397845), (3, 132615), (5, 79569), (7, 56835), (9, 44205), (15, 26523), (21, 18945), (27, 14735), (35, 11367), (45, 8841), (63, 6315), (105, 3789), (135, 2947), (189, 2105), (315, 1263), (421, 945)]