20810260

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1283}}^1$

素因数の和:2103

約数の個数: 24

約数和(自身を含む): 43789536

約数和(自身を除く): 22979276

約数列:

[1, 2, 4, 5, 10, 20, 811, 1283, 1622, 2566, 3244, 4055, 5132, 6415, 8110, 12830, 16220, 25660, 1040513, 2081026, 4162052, 5202565, 10405130, 20810260]

約数ペア:

[(1, 20810260), (2, 10405130), (4, 5202565), (5, 4162052), (10, 2081026), (20, 1040513), (811, 25660), (1283, 16220), (1622, 12830), (2566, 8110), (3244, 6415), (4055, 5132)]