261789.0000000

素因数分解:

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

素因数の和:247

約数の個数: 32

約数和(自身を含む): 10575360

約数和(自身を除く): 3993897

約数列:

[1, 3, 7, 21, 29, 87, 101, 107, 203, 303, 321, 609, 707, 749, 2121, 2247, 2929, 3103, 8787, 9309, 10807, 20503, 21721, 32421, 61509, 65163, 75649, 226947, 313403, 940209, 2193821, 6581463]

約数ペア:

[(1, 6581463), (3, 2193821), (7, 940209), (21, 313403), (29, 226947), (87, 75649), (101, 65163), (107, 61509), (203, 32421), (303, 21721), (321, 20503), (609, 10807), (707, 9309), (749, 8787), (2121, 3103), (2247, 2929)]