2781779

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 3811248

約数和(自身を除く): 1029469

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 397, 539, 637, 1001, 2779, 4367, 5161, 7007, 19453, 30569, 36127, 56771, 213983, 252889, 397397, 2781779]

約数ペア:

[(1, 2781779), (7, 397397), (11, 252889), (13, 213983), (49, 56771), (77, 36127), (91, 30569), (143, 19453), (397, 7007), (539, 5161), (637, 4367), (1001, 2779)]