19976724

素因数分解:

$2^2\times 3^2\times {\mathrm{643}}^1\times {\mathrm{863}}^1$

素因数の和:1516

約数の個数: 36

約数和(自身を含む): 50633856

約数和(自身を除く): 30657132

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 643, 863, 1286, 1726, 1929, 2572, 2589, 3452, 3858, 5178, 5787, 7716, 7767, 10356, 11574, 15534, 23148, 31068, 554909, 1109818, 1664727, 2219636, 3329454, 4994181, 6658908, 9988362, 19976724]

約数ペア:

[(1, 19976724), (2, 9988362), (3, 6658908), (4, 4994181), (6, 3329454), (9, 2219636), (12, 1664727), (18, 1109818), (36, 554909), (643, 31068), (863, 23148), (1286, 15534), (1726, 11574), (1929, 10356), (2572, 7767), (2589, 7716), (3452, 5787), (3858, 5178)]