18282980

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3557}}^1$

素因数の和:3823

約数の個数: 24

約数和(自身を含む): 38554488

約数和(自身を除く): 20271508

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 3557, 5140, 7114, 14228, 17785, 35570, 71140, 914149, 1828298, 3656596, 4570745, 9141490, 18282980]

約数ペア:

[(1, 18282980), (2, 9141490), (4, 4570745), (5, 3656596), (10, 1828298), (20, 914149), (257, 71140), (514, 35570), (1028, 17785), (1285, 14228), (2570, 7114), (3557, 5140)]