28662220

素因数分解:

$2^2\times 5^1\times {\mathrm{1117}}^1\times {\mathrm{1283}}^1$

素因数の和:2409

約数の個数: 24

約数和(自身を含む): 60291504

約数和(自身を除く): 31629284

約数列:

[1, 2, 4, 5, 10, 20, 1117, 1283, 2234, 2566, 4468, 5132, 5585, 6415, 11170, 12830, 22340, 25660, 1433111, 2866222, 5732444, 7165555, 14331110, 28662220]

約数ペア:

[(1, 28662220), (2, 14331110), (4, 7165555), (5, 5732444), (10, 2866222), (20, 1433111), (1117, 25660), (1283, 22340), (2234, 12830), (2566, 11170), (4468, 6415), (5132, 5585)]