28405531

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{167}}^1$

素因数の和:279

約数の個数: 24

約数和(自身を含む): 36400896

約数和(自身を除く): 7995365

約数列:

[1, 7, 11, 47, 77, 167, 329, 517, 1169, 1837, 2209, 3619, 7849, 12859, 15463, 24299, 54943, 86339, 170093, 368903, 604373, 2582321, 4057933, 28405531]

約数ペア:

[(1, 28405531), (7, 4057933), (11, 2582321), (47, 604373), (77, 368903), (167, 170093), (329, 86339), (517, 54943), (1169, 24299), (1837, 15463), (2209, 12859), (3619, 7849)]