20817645

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{727}}^1$

素因数の和:841

約数の個数: 32

約数和(自身を含む): 35223552

約数和(自身を除く): 14405907

約数列:

[1, 3, 5, 15, 23, 69, 83, 115, 249, 345, 415, 727, 1245, 1909, 2181, 3635, 5727, 9545, 10905, 16721, 28635, 50163, 60341, 83605, 181023, 250815, 301705, 905115, 1387843, 4163529, 6939215, 20817645]

約数ペア:

[(1, 20817645), (3, 6939215), (5, 4163529), (15, 1387843), (23, 905115), (69, 301705), (83, 250815), (115, 181023), (249, 83605), (345, 60341), (415, 50163), (727, 28635), (1245, 16721), (1909, 10905), (2181, 9545), (3635, 5727)]