18910179

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{1487}}^1$

素因数の和:1656

約数の個数: 20

約数和(自身を含む): 28447584

約数和(自身を除く): 9537405

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 1487, 4239, 4461, 12717, 13383, 40149, 120447, 233459, 700377, 2101131, 6303393, 18910179]

約数ペア:

[(1, 18910179), (3, 6303393), (9, 2101131), (27, 700377), (81, 233459), (157, 120447), (471, 40149), (1413, 13383), (1487, 12717), (4239, 4461)]