7780857

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1291}}^1$

素因数の和:1349

約数の個数: 24

約数和(自身を含む): 12372192

約数和(自身を除く): 4591335

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 1291, 2009, 3873, 6027, 9037, 27111, 52931, 63259, 158793, 189777, 370517, 1111551, 2593619, 7780857]

約数ペア:

[(1, 7780857), (3, 2593619), (7, 1111551), (21, 370517), (41, 189777), (49, 158793), (123, 63259), (147, 52931), (287, 27111), (861, 9037), (1291, 6027), (2009, 3873)]