28409885

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{439}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 39980160

約数和(自身を除く): 11570275

約数列:

[1, 5, 7, 35, 43, 215, 301, 439, 1505, 1849, 2195, 3073, 9245, 12943, 15365, 18877, 64715, 94385, 132139, 660695, 811711, 4058555, 5681977, 28409885]

約数ペア:

[(1, 28409885), (5, 5681977), (7, 4058555), (35, 811711), (43, 660695), (215, 132139), (301, 94385), (439, 64715), (1505, 18877), (1849, 15365), (2195, 12943), (3073, 9245)]