18920541

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 27163360

約数和(自身を除く): 8242819

約数列:

[1, 3, 17, 51, 139, 157, 289, 417, 471, 867, 2363, 2669, 7089, 8007, 21823, 40171, 45373, 65469, 120513, 136119, 370991, 1112973, 6306847, 18920541]

約数ペア:

[(1, 18920541), (3, 6306847), (17, 1112973), (51, 370991), (139, 136119), (157, 120513), (289, 65469), (417, 45373), (471, 40171), (867, 21823), (2363, 8007), (2669, 7089)]