20281963527

素因数分解:

$3^2\times 7^3\times {\mathrm{107}}^1\times {\mathrm{61403}}^1$

素因数の和:61537

約数の個数: 48

約数和(自身を含む): 34484486400

約数和(自身を除く): 14202522873

約数列:

[1, 3, 7, 9, 21, 49, 63, 107, 147, 321, 343, 441, 749, 963, 1029, 2247, 3087, 5243, 6741, 15729, 36701, 47187, 61403, 110103, 184209, 330309, 429821, 552627, 1289463, 3008747, 3868389, 6570121, 9026241, 19710363, 21061229, 27078723, 45990847, 59131089, 63183687, 137972541, 189551061, 321935929, 413917623, 965807787, 2253551503, 2897423361, 6760654509, 20281963527]

約数ペア:

[(1, 20281963527), (3, 6760654509), (7, 2897423361), (9, 2253551503), (21, 965807787), (49, 413917623), (63, 321935929), (107, 189551061), (147, 137972541), (321, 63183687), (343, 59131089), (441, 45990847), (749, 27078723), (963, 21061229), (1029, 19710363), (2247, 9026241), (3087, 6570121), (5243, 3868389), (6741, 3008747), (15729, 1289463), (36701, 552627), (47187, 429821), (61403, 330309), (110103, 184209)]