20664095

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:235

約数の個数: 32

約数和(自身を含む): 27760320

約数和(自身を除く): 7096225

約数列:

[1, 5, 17, 29, 83, 85, 101, 145, 415, 493, 505, 1411, 1717, 2407, 2465, 2929, 7055, 8383, 8585, 12035, 14645, 40919, 41915, 49793, 142511, 204595, 243107, 248965, 712555, 1215535, 4132819, 20664095]

約数ペア:

[(1, 20664095), (5, 4132819), (17, 1215535), (29, 712555), (83, 248965), (85, 243107), (101, 204595), (145, 142511), (415, 49793), (493, 41915), (505, 40919), (1411, 14645), (1717, 12035), (2407, 8585), (2465, 8383), (2929, 7055)]