21505799

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1423}}^1$

素因数の和:1574

約数の個数: 16

約数和(自身を含む): 26247168

約数和(自身を除く): 4741369

約数列:

[1, 7, 17, 119, 127, 889, 1423, 2159, 9961, 15113, 24191, 169337, 180721, 1265047, 3072257, 21505799]

約数ペア:

[(1, 21505799), (7, 3072257), (17, 1265047), (119, 180721), (127, 169337), (889, 24191), (1423, 15113), (2159, 9961)]