21853791

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 35093760

約数和(自身を除く): 13239969

約数列:

[1, 3, 9, 29, 31, 37, 73, 87, 93, 111, 219, 261, 279, 333, 657, 899, 1073, 1147, 2117, 2263, 2697, 2701, 3219, 3441, 6351, 6789, 8091, 8103, 9657, 10323, 19053, 20367, 24309, 33263, 65627, 78329, 83731, 99789, 196881, 234987, 251193, 299367, 590643, 704961, 753579, 2428199, 7284597, 21853791]

約数ペア:

[(1, 21853791), (3, 7284597), (9, 2428199), (29, 753579), (31, 704961), (37, 590643), (73, 299367), (87, 251193), (93, 234987), (111, 196881), (219, 99789), (261, 83731), (279, 78329), (333, 65627), (657, 33263), (899, 24309), (1073, 20367), (1147, 19053), (2117, 10323), (2263, 9657), (2697, 8103), (2701, 8091), (3219, 6789), (3441, 6351)]