1218809997

素因数分解:

$3^6\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:661

約数の個数: 56

約数和(自身を含む): 1923120384

約数和(自身を除く): 704310387

約数列:

[1, 3, 9, 23, 27, 69, 81, 157, 207, 243, 463, 471, 621, 729, 1389, 1413, 1863, 3611, 4167, 4239, 5589, 10649, 10833, 12501, 12717, 16767, 31947, 32499, 37503, 38151, 72691, 95841, 97497, 112509, 114453, 218073, 287523, 292491, 337527, 654219, 862569, 877473, 1671893, 1962657, 2587707, 2632419, 5015679, 5887971, 7763121, 15047037, 17663913, 45141111, 52991739, 135423333, 406269999, 1218809997]

約数ペア:

[(1, 1218809997), (3, 406269999), (9, 135423333), (23, 52991739), (27, 45141111), (69, 17663913), (81, 15047037), (157, 7763121), (207, 5887971), (243, 5015679), (463, 2632419), (471, 2587707), (621, 1962657), (729, 1671893), (1389, 877473), (1413, 862569), (1863, 654219), (3611, 337527), (4167, 292491), (4239, 287523), (5589, 218073), (10649, 114453), (10833, 112509), (12501, 97497), (12717, 95841), (16767, 72691), (31947, 38151), (32499, 37503)]