19987677

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{653}}^1$

素因数の和:857

約数の個数: 24

約数和(自身を含む): 30607200

約数和(自身を除く): 10619523

約数列:

[1, 3, 9, 19, 57, 171, 179, 537, 653, 1611, 1959, 3401, 5877, 10203, 12407, 30609, 37221, 111663, 116887, 350661, 1051983, 2220853, 6662559, 19987677]

約数ペア:

[(1, 19987677), (3, 6662559), (9, 2220853), (19, 1051983), (57, 350661), (171, 116887), (179, 111663), (537, 37221), (653, 30609), (1611, 12407), (1959, 10203), (3401, 5877)]