20928537

素因数分解:

$3^4\times 7^2\times {\mathrm{5273}}^1$

素因数の和:5299

約数の個数: 30

約数和(自身を含む): 36374778

約数和(自身を除く): 15446241

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5273, 15819, 36911, 47457, 110733, 142371, 258377, 332199, 427113, 775131, 996597, 2325393, 2989791, 6976179, 20928537]

約数ペア:

[(1, 20928537), (3, 6976179), (7, 2989791), (9, 2325393), (21, 996597), (27, 775131), (49, 427113), (63, 332199), (81, 258377), (147, 142371), (189, 110733), (441, 47457), (567, 36911), (1323, 15819), (3969, 5273)]