20471661

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{761}}^1$

素因数の和:842

約数の個数: 36

約数和(自身を含む): 35007804

約数和(自身を除く): 14536143

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 549, 761, 1281, 2283, 2989, 3843, 5327, 6849, 8967, 15981, 26901, 37289, 46421, 47943, 111867, 139263, 324947, 335601, 417789, 974841, 2274629, 2924523, 6823887, 20471661]

約数ペア:

[(1, 20471661), (3, 6823887), (7, 2924523), (9, 2274629), (21, 974841), (49, 417789), (61, 335601), (63, 324947), (147, 139263), (183, 111867), (427, 47943), (441, 46421), (549, 37289), (761, 26901), (1281, 15981), (2283, 8967), (2989, 6849), (3843, 5327)]