21828205

素因数分解:

$5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{1787}}^1$

素因数の和:2148

約数の個数: 16

約数和(自身を含む): 30038400

約数和(自身を除く): 8210195

約数列:

[1, 5, 7, 35, 349, 1745, 1787, 2443, 8935, 12215, 12509, 62545, 623663, 3118315, 4365641, 21828205]

約数ペア:

[(1, 21828205), (5, 4365641), (7, 3118315), (35, 623663), (349, 62545), (1745, 12509), (1787, 12215), (2443, 8935)]