28020699

素因数分解:

$3^2\times 7^3\times {\mathrm{29}}^1\times {\mathrm{313}}^1$

素因数の和:369

約数の個数: 48

約数和(自身を含む): 48984000

約数和(自身を除く): 20963301

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 313, 343, 441, 609, 939, 1029, 1421, 1827, 2191, 2817, 3087, 4263, 6573, 9077, 9947, 12789, 15337, 19719, 27231, 29841, 46011, 63539, 81693, 89523, 107359, 138033, 190617, 322077, 444773, 571851, 966231, 1334319, 3113411, 4002957, 9340233, 28020699]

約数ペア:

[(1, 28020699), (3, 9340233), (7, 4002957), (9, 3113411), (21, 1334319), (29, 966231), (49, 571851), (63, 444773), (87, 322077), (147, 190617), (203, 138033), (261, 107359), (313, 89523), (343, 81693), (441, 63539), (609, 46011), (939, 29841), (1029, 27231), (1421, 19719), (1827, 15337), (2191, 12789), (2817, 9947), (3087, 9077), (4263, 6573)]