644919219

素因数分解:

$3^3\times 7^1\times {\mathrm{3412271}}^1$

素因数の和:3412287

約数の個数: 16

約数和(自身を含む): 1091927040

約数和(自身を除く): 447007821

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 3412271, 10236813, 23885897, 30710439, 71657691, 92131317, 214973073, 644919219]

約数ペア:

[(1, 644919219), (3, 214973073), (7, 92131317), (9, 71657691), (21, 30710439), (27, 23885897), (63, 10236813), (189, 3412271)]