21025585

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8461}}^1$

素因数の和:8544

約数の個数: 16

約数和(自身を含む): 29244672

約数和(自身を除く): 8219087

約数列:

[1, 5, 7, 35, 71, 355, 497, 2485, 8461, 42305, 59227, 296135, 600731, 3003655, 4205117, 21025585]

約数ペア:

[(1, 21025585), (5, 4205117), (7, 3003655), (35, 600731), (71, 296135), (355, 59227), (497, 42305), (2485, 8461)]