21555234

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:229

約数の個数: 80

約数和(自身を含む): 52272000

約数和(自身を除く): 30716766

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 47, 54, 57, 81, 94, 114, 141, 149, 162, 171, 282, 298, 342, 423, 447, 513, 846, 893, 894, 1026, 1269, 1341, 1539, 1786, 2538, 2679, 2682, 2831, 3078, 3807, 4023, 5358, 5662, 7003, 7614, 8037, 8046, 8493, 12069, 14006, 16074, 16986, 21009, 24111, 24138, 25479, 42018, 48222, 50958, 63027, 72333, 76437, 126054, 133057, 144666, 152874, 189081, 229311, 266114, 378162, 399171, 458622, 567243, 798342, 1134486, 1197513, 2395026, 3592539, 7185078, 10777617, 21555234]

約数ペア:

[(1, 21555234), (2, 10777617), (3, 7185078), (6, 3592539), (9, 2395026), (18, 1197513), (19, 1134486), (27, 798342), (38, 567243), (47, 458622), (54, 399171), (57, 378162), (81, 266114), (94, 229311), (114, 189081), (141, 152874), (149, 144666), (162, 133057), (171, 126054), (282, 76437), (298, 72333), (342, 63027), (423, 50958), (447, 48222), (513, 42018), (846, 25479), (893, 24138), (894, 24111), (1026, 21009), (1269, 16986), (1341, 16074), (1539, 14006), (1786, 12069), (2538, 8493), (2679, 8046), (2682, 8037), (2831, 7614), (3078, 7003), (3807, 5662), (4023, 5358)]