20809911620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25377941}}^1$

素因数の和:25377991

約数の個数: 24

約数和(自身を含む): 44766689688

約数和(自身を除く): 23956778068

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25377941, 50755882, 101511764, 126889705, 253779410, 507558820, 1040495581, 2080991162, 4161982324, 5202477905, 10404955810, 20809911620]

約数ペア:

[(1, 20809911620), (2, 10404955810), (4, 5202477905), (5, 4161982324), (10, 2080991162), (20, 1040495581), (41, 507558820), (82, 253779410), (164, 126889705), (205, 101511764), (410, 50755882), (820, 25377941)]