28808210

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{21991}}^1$

素因数の和:22129

約数の個数: 16

約数和(自身を含む): 52252992

約数和(自身を除く): 23444782

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 21991, 43982, 109955, 219910, 2880821, 5761642, 14404105, 28808210]

約数ペア:

[(1, 28808210), (2, 14404105), (5, 5761642), (10, 2880821), (131, 219910), (262, 109955), (655, 43982), (1310, 21991)]