20213780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43943}}^1$

素因数の和:43975

約数の個数: 24

約数和(自身を含む): 44295552

約数和(自身を除く): 24081772

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 43943, 87886, 175772, 219715, 439430, 878860, 1010689, 2021378, 4042756, 5053445, 10106890, 20213780]

約数ペア:

[(1, 20213780), (2, 10106890), (4, 5053445), (5, 4042756), (10, 2021378), (20, 1010689), (23, 878860), (46, 439430), (92, 219715), (115, 175772), (230, 87886), (460, 43943)]