209215937

素因数分解:

$7^4\times {\mathrm{79}}^1\times {\mathrm{1103}}^1$

素因数の和:1210

約数の個数: 20

約数和(自身を含む): 247384320

約数和(自身を除く): 38168383

約数列:

[1, 7, 49, 79, 343, 553, 1103, 2401, 3871, 7721, 27097, 54047, 87137, 189679, 378329, 609959, 2648303, 4269713, 29887991, 209215937]

約数ペア:

[(1, 209215937), (7, 29887991), (49, 4269713), (79, 2648303), (343, 609959), (553, 378329), (1103, 189679), (2401, 87137), (3871, 54047), (7721, 27097)]