217279341

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{86531}}^1$

素因数の和:86574

約数の個数: 20

約数和(自身を含む): 335051904

約数和(自身を除く): 117772563

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 86531, 259593, 778779, 2336337, 2682461, 7009011, 8047383, 24142149, 72426447, 217279341]

約数ペア:

[(1, 217279341), (3, 72426447), (9, 24142149), (27, 8047383), (31, 7009011), (81, 2682461), (93, 2336337), (279, 778779), (837, 259593), (2511, 86531)]