19744389

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 14625531

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 101, 107, 203, 261, 303, 321, 609, 707, 749, 909, 963, 1827, 2121, 2247, 2929, 3103, 6363, 6741, 8787, 9309, 10807, 20503, 21721, 26361, 27927, 32421, 61509, 65163, 75649, 97263, 184527, 195489, 226947, 313403, 680841, 940209, 2193821, 2820627, 6581463, 19744389]

約数ペア:

[(1, 19744389), (3, 6581463), (7, 2820627), (9, 2193821), (21, 940209), (29, 680841), (63, 313403), (87, 226947), (101, 195489), (107, 184527), (203, 97263), (261, 75649), (303, 65163), (321, 61509), (609, 32421), (707, 27927), (749, 26361), (909, 21721), (963, 20503), (1827, 10807), (2121, 9309), (2247, 8787), (2929, 6741), (3103, 6363)]