28720328

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{39451}}^1$

素因数の和:39477

約数の個数: 32

約数和(自身を含む): 66279360

約数和(自身を除く): 37559032

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 39451, 78902, 157804, 276157, 315608, 512863, 552314, 1025726, 1104628, 2051452, 2209256, 3590041, 4102904, 7180082, 14360164, 28720328]

約数ペア:

[(1, 28720328), (2, 14360164), (4, 7180082), (7, 4102904), (8, 3590041), (13, 2209256), (14, 2051452), (26, 1104628), (28, 1025726), (52, 552314), (56, 512863), (91, 315608), (104, 276157), (182, 157804), (364, 78902), (728, 39451)]