21182283

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 33369600

約数和(自身を除く): 12187317

約数列:

[1, 3, 9, 19, 27, 57, 157, 171, 263, 471, 513, 789, 1413, 2367, 2983, 4239, 4997, 7101, 8949, 14991, 26847, 41291, 44973, 80541, 123873, 134919, 371619, 784529, 1114857, 2353587, 7060761, 21182283]

約数ペア:

[(1, 21182283), (3, 7060761), (9, 2353587), (19, 1114857), (27, 784529), (57, 371619), (157, 134919), (171, 123873), (263, 80541), (471, 44973), (513, 41291), (789, 26847), (1413, 14991), (2367, 8949), (2983, 7101), (4239, 4997)]