243340220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{640369}}^1$

素因数の和:640397

約数の個数: 24

約数和(自身を含む): 537910800

約数和(自身を除く): 294570580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 640369, 1280738, 2561476, 3201845, 6403690, 12167011, 12807380, 24334022, 48668044, 60835055, 121670110, 243340220]

約数ペア:

[(1, 243340220), (2, 121670110), (4, 60835055), (5, 48668044), (10, 24334022), (19, 12807380), (20, 12167011), (38, 6403690), (76, 3201845), (95, 2561476), (190, 1280738), (380, 640369)]