20387367

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 96

約数和(自身を含む): 41373696

約数和(自身を除く): 20986329

約数列:

[1, 3, 7, 9, 11, 13, 21, 31, 33, 39, 63, 73, 77, 91, 93, 99, 117, 143, 217, 219, 231, 273, 279, 341, 403, 429, 511, 651, 657, 693, 803, 819, 949, 1001, 1023, 1209, 1287, 1533, 1953, 2263, 2387, 2409, 2821, 2847, 3003, 3069, 3627, 4433, 4599, 5621, 6643, 6789, 7161, 7227, 8463, 8541, 9009, 10439, 13299, 15841, 16863, 19929, 20367, 21483, 24893, 25389, 29419, 31031, 31317, 39897, 47523, 50589, 59787, 73073, 74679, 88257, 93093, 93951, 142569, 174251, 205933, 219219, 224037, 264771, 279279, 323609, 522753, 617799, 657657, 970827, 1568259, 1853397, 2265263, 2912481, 6795789, 20387367]

約数ペア:

[(1, 20387367), (3, 6795789), (7, 2912481), (9, 2265263), (11, 1853397), (13, 1568259), (21, 970827), (31, 657657), (33, 617799), (39, 522753), (63, 323609), (73, 279279), (77, 264771), (91, 224037), (93, 219219), (99, 205933), (117, 174251), (143, 142569), (217, 93951), (219, 93093), (231, 88257), (273, 74679), (279, 73073), (341, 59787), (403, 50589), (429, 47523), (511, 39897), (651, 31317), (657, 31031), (693, 29419), (803, 25389), (819, 24893), (949, 21483), (1001, 20367), (1023, 19929), (1209, 16863), (1287, 15841), (1533, 13299), (1953, 10439), (2263, 9009), (2387, 8541), (2409, 8463), (2821, 7227), (2847, 7161), (3003, 6789), (3069, 6643), (3627, 5621), (4433, 4599)]