661781379

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{248137}}^1$

素因数の和:248274

約数の個数: 16

約数和(自身を含む): 1016373248

約数和(自身を除く): 354591869

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 248137, 744411, 1736959, 5210877, 31513399, 94540197, 220593793, 661781379]

約数ペア:

[(1, 661781379), (3, 220593793), (7, 94540197), (21, 31513399), (127, 5210877), (381, 1736959), (889, 744411), (2667, 248137)]