28221039

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 51327744

約数和(自身を除く): 23106705

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 193, 211, 231, 579, 633, 693, 1351, 1477, 1737, 1899, 2123, 2321, 4053, 4431, 6369, 6963, 12159, 13293, 14861, 16247, 19107, 20889, 40723, 44583, 48741, 122169, 133749, 146223, 285061, 366507, 447953, 855183, 1343859, 2565549, 3135671, 4031577, 9407013, 28221039]

約数ペア:

[(1, 28221039), (3, 9407013), (7, 4031577), (9, 3135671), (11, 2565549), (21, 1343859), (33, 855183), (63, 447953), (77, 366507), (99, 285061), (193, 146223), (211, 133749), (231, 122169), (579, 48741), (633, 44583), (693, 40723), (1351, 20889), (1477, 19107), (1737, 16247), (1899, 14861), (2123, 13293), (2321, 12159), (4053, 6963), (4431, 6369)]