19780299

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 39896064

約数和(自身を除く): 20115765

約数列:

[1, 3, 7, 9, 11, 17, 21, 23, 33, 51, 63, 69, 73, 77, 99, 119, 153, 161, 187, 207, 219, 231, 253, 357, 391, 483, 511, 561, 657, 693, 759, 803, 1071, 1173, 1241, 1309, 1449, 1533, 1679, 1683, 1771, 2277, 2409, 2737, 3519, 3723, 3927, 4301, 4599, 5037, 5313, 5621, 7227, 8211, 8687, 11169, 11753, 11781, 12903, 13651, 15111, 15939, 16863, 18469, 24633, 26061, 28543, 30107, 35259, 38709, 40953, 50589, 55407, 78183, 85629, 90321, 95557, 105777, 122859, 129283, 166221, 199801, 256887, 270963, 286671, 313973, 387849, 599403, 860013, 941919, 1163547, 1798209, 2197811, 2825757, 6593433, 19780299]

約数ペア:

[(1, 19780299), (3, 6593433), (7, 2825757), (9, 2197811), (11, 1798209), (17, 1163547), (21, 941919), (23, 860013), (33, 599403), (51, 387849), (63, 313973), (69, 286671), (73, 270963), (77, 256887), (99, 199801), (119, 166221), (153, 129283), (161, 122859), (187, 105777), (207, 95557), (219, 90321), (231, 85629), (253, 78183), (357, 55407), (391, 50589), (483, 40953), (511, 38709), (561, 35259), (657, 30107), (693, 28543), (759, 26061), (803, 24633), (1071, 18469), (1173, 16863), (1241, 15939), (1309, 15111), (1449, 13651), (1533, 12903), (1679, 11781), (1683, 11753), (1771, 11169), (2277, 8687), (2409, 8211), (2737, 7227), (3519, 5621), (3723, 5313), (3927, 5037), (4301, 4599)]