19996317

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 33291648

約数和(自身を除く): 13295331

約数列:

[1, 3, 9, 11, 33, 37, 53, 99, 103, 111, 159, 309, 333, 407, 477, 583, 927, 1133, 1221, 1749, 1961, 3399, 3663, 3811, 5247, 5459, 5883, 10197, 11433, 16377, 17649, 21571, 34299, 41921, 49131, 60049, 64713, 125763, 180147, 194139, 201983, 377289, 540441, 605949, 1817847, 2221813, 6665439, 19996317]

約数ペア:

[(1, 19996317), (3, 6665439), (9, 2221813), (11, 1817847), (33, 605949), (37, 540441), (53, 377289), (99, 201983), (103, 194139), (111, 180147), (159, 125763), (309, 64713), (333, 60049), (407, 49131), (477, 41921), (583, 34299), (927, 21571), (1133, 17649), (1221, 16377), (1749, 11433), (1961, 10197), (3399, 5883), (3663, 5459), (3811, 5247)]