21000331737

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{157013}}^1$

素因数の和:157230

約数の個数: 48

約数和(自身を含む): 38014973568

約数和(自身を除く): 17014641831

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 193, 231, 579, 693, 1351, 1737, 2123, 4053, 6369, 12159, 14861, 19107, 44583, 133749, 157013, 471039, 1099091, 1413117, 1727143, 3297273, 5181429, 9891819, 12090001, 15544287, 30303509, 36270003, 90910527, 108810009, 212124563, 272731581, 333338599, 636373689, 1000015797, 1909121067, 2333370193, 3000047391, 7000110579, 21000331737]

約数ペア:

[(1, 21000331737), (3, 7000110579), (7, 3000047391), (9, 2333370193), (11, 1909121067), (21, 1000015797), (33, 636373689), (63, 333338599), (77, 272731581), (99, 212124563), (193, 108810009), (231, 90910527), (579, 36270003), (693, 30303509), (1351, 15544287), (1737, 12090001), (2123, 9891819), (4053, 5181429), (6369, 3297273), (12159, 1727143), (14861, 1413117), (19107, 1099091), (44583, 471039), (133749, 157013)]