19720372220

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3928361}}^1$

素因数の和:3928621

約数の個数: 24

約数和(自身を含む): 41577783408

約数和(自身を除く): 21857411188

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 3928361, 7856722, 15713444, 19641805, 39283610, 78567220, 986018611, 1972037222, 3944074444, 4930093055, 9860186110, 19720372220]

約数ペア:

[(1, 19720372220), (2, 9860186110), (4, 4930093055), (5, 3944074444), (10, 1972037222), (20, 986018611), (251, 78567220), (502, 39283610), (1004, 19641805), (1255, 15713444), (2510, 7856722), (5020, 3928361)]