20751577

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 7117607

約数列:

[1, 7, 11, 17, 77, 83, 119, 187, 191, 581, 913, 1309, 1337, 1411, 2101, 3247, 6391, 9877, 14707, 15521, 15853, 22729, 35717, 108647, 110971, 174383, 250019, 269501, 1220681, 1886507, 2964511, 20751577]

約数ペア:

[(1, 20751577), (7, 2964511), (11, 1886507), (17, 1220681), (77, 269501), (83, 250019), (119, 174383), (187, 110971), (191, 108647), (581, 35717), (913, 22729), (1309, 15853), (1337, 15521), (1411, 14707), (2101, 9877), (3247, 6391)]