81647818

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{28729}}^1$

素因数の和:28774

約数の個数: 24

約数和(自身を含む): 147384900

約数和(自身を除く): 65737082

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 406, 1421, 2842, 28729, 57458, 201103, 402206, 833141, 1407721, 1666282, 2815442, 5831987, 11663974, 40823909, 81647818]

約数ペア:

[(1, 81647818), (2, 40823909), (7, 11663974), (14, 5831987), (29, 2815442), (49, 1666282), (58, 1407721), (98, 833141), (203, 402206), (406, 201103), (1421, 57458), (2842, 28729)]