208409841

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{709}}^1$

素因数の和:931

約数の個数: 40

約数和(自身を含む): 329894400

約数和(自身を除く): 121484559

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 191, 513, 573, 709, 1539, 1719, 2127, 3629, 5157, 6381, 10887, 13471, 15471, 19143, 32661, 40413, 57429, 97983, 121239, 135419, 293949, 363717, 406257, 1091151, 1218771, 2572961, 3656313, 7718883, 10968939, 23156649, 69469947, 208409841]

約数ペア:

[(1, 208409841), (3, 69469947), (9, 23156649), (19, 10968939), (27, 7718883), (57, 3656313), (81, 2572961), (171, 1218771), (191, 1091151), (513, 406257), (573, 363717), (709, 293949), (1539, 135419), (1719, 121239), (2127, 97983), (3629, 57429), (5157, 40413), (6381, 32661), (10887, 19143), (13471, 15471)]