20875239

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3347}}^1$

素因数の和:3377

約数の個数: 40

約数和(自身を含む): 38890368

約数和(自身を除く): 18015129

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 297, 567, 693, 891, 2079, 3347, 6237, 10041, 23429, 30123, 36817, 70287, 90369, 110451, 210861, 257719, 271107, 331353, 632583, 773157, 994059, 1897749, 2319471, 2982177, 6958413, 20875239]

約数ペア:

[(1, 20875239), (3, 6958413), (7, 2982177), (9, 2319471), (11, 1897749), (21, 994059), (27, 773157), (33, 632583), (63, 331353), (77, 271107), (81, 257719), (99, 210861), (189, 110451), (231, 90369), (297, 70287), (567, 36817), (693, 30123), (891, 23429), (2079, 10041), (3347, 6237)]