19955637

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 13590603

約数列:

[1, 3, 9, 13, 17, 39, 51, 79, 117, 127, 153, 221, 237, 381, 663, 711, 1027, 1143, 1343, 1651, 1989, 2159, 3081, 4029, 4953, 6477, 9243, 10033, 12087, 14859, 17459, 19431, 28067, 30099, 52377, 84201, 90297, 130429, 157131, 170561, 252603, 391287, 511683, 1173861, 1535049, 2217293, 6651879, 19955637]

約数ペア:

[(1, 19955637), (3, 6651879), (9, 2217293), (13, 1535049), (17, 1173861), (39, 511683), (51, 391287), (79, 252603), (117, 170561), (127, 157131), (153, 130429), (221, 90297), (237, 84201), (381, 52377), (663, 30099), (711, 28067), (1027, 19431), (1143, 17459), (1343, 14859), (1651, 12087), (1989, 10033), (2159, 9243), (3081, 6477), (4029, 4953)]