1903993

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:102

約数の個数: 20

約数和(自身を含む): 2431268

約数和(自身を除く): 527275

約数列:

[1, 7, 13, 49, 61, 91, 343, 427, 637, 793, 2401, 2989, 4459, 5551, 20923, 31213, 38857, 146461, 271999, 1903993]

約数ペア:

[(1, 1903993), (7, 271999), (13, 146461), (49, 38857), (61, 31213), (91, 20923), (343, 5551), (427, 4459), (637, 2989), (793, 2401)]