19804257

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 33546240

約数和(自身を除く): 13741983

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 239, 243, 279, 297, 341, 717, 837, 891, 1023, 2151, 2511, 2629, 2673, 3069, 6453, 7409, 7533, 7887, 9207, 19359, 22227, 23661, 27621, 58077, 66681, 70983, 81499, 82863, 200043, 212949, 244497, 600129, 638847, 733491, 1800387, 2200473, 6601419, 19804257]

約数ペア:

[(1, 19804257), (3, 6601419), (9, 2200473), (11, 1800387), (27, 733491), (31, 638847), (33, 600129), (81, 244497), (93, 212949), (99, 200043), (239, 82863), (243, 81499), (279, 70983), (297, 66681), (341, 58077), (717, 27621), (837, 23661), (891, 22227), (1023, 19359), (2151, 9207), (2511, 7887), (2629, 7533), (2673, 7409), (3069, 6453)]