21072623

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 5538577

約数列:

[1, 11, 13, 23, 43, 143, 149, 253, 299, 473, 559, 989, 1639, 1937, 3289, 3427, 6149, 6407, 10879, 12857, 21307, 37697, 44551, 70477, 83291, 141427, 147361, 490061, 916201, 1620971, 1915693, 21072623]

約数ペア:

[(1, 21072623), (11, 1915693), (13, 1620971), (23, 916201), (43, 490061), (143, 147361), (149, 141427), (253, 83291), (299, 70477), (473, 44551), (559, 37697), (989, 21307), (1639, 12857), (1937, 10879), (3289, 6407), (3427, 6149)]