20781500523

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{417727}}^1$

素因数の和:417863

約数の個数: 32

約数和(自身を含む): 33364770816

約数和(自身を除く): 12583270293

約数列:

[1, 3, 7, 21, 23, 69, 103, 161, 309, 483, 721, 2163, 2369, 7107, 16583, 49749, 417727, 1253181, 2924089, 8772267, 9607721, 28823163, 43025881, 67254047, 129077643, 201762141, 301181167, 903543501, 989595263, 2968785789, 6927166841, 20781500523]

約数ペア:

[(1, 20781500523), (3, 6927166841), (7, 2968785789), (21, 989595263), (23, 903543501), (69, 301181167), (103, 201762141), (161, 129077643), (309, 67254047), (483, 43025881), (721, 28823163), (2163, 9607721), (2369, 8772267), (7107, 2924089), (16583, 1253181), (49749, 417727)]