18812199

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 29804544

約数和(自身を除く): 10992345

約数列:

[1, 3, 7, 21, 43, 83, 129, 249, 251, 301, 581, 753, 903, 1743, 1757, 3569, 5271, 10707, 10793, 20833, 24983, 32379, 62499, 74949, 75551, 145831, 226653, 437493, 895819, 2687457, 6270733, 18812199]

約数ペア:

[(1, 18812199), (3, 6270733), (7, 2687457), (21, 895819), (43, 437493), (83, 226653), (129, 145831), (249, 75551), (251, 74949), (301, 62499), (581, 32379), (753, 24983), (903, 20833), (1743, 10793), (1757, 10707), (3569, 5271)]