21879831

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 32182272

約数和(自身を除く): 10302441

約数列:

[1, 3, 23, 31, 53, 69, 93, 159, 193, 579, 713, 1219, 1643, 2139, 3657, 4439, 4929, 5983, 10229, 13317, 17949, 30687, 37789, 113367, 137609, 235267, 317099, 412827, 705801, 951297, 7293277, 21879831]

約数ペア:

[(1, 21879831), (3, 7293277), (23, 951297), (31, 705801), (53, 412827), (69, 317099), (93, 235267), (159, 137609), (193, 113367), (579, 37789), (713, 30687), (1219, 17949), (1643, 13317), (2139, 10229), (3657, 5983), (4439, 4929)]