128215231880

素因数分解:

$2^3\times 5^1\times {\mathrm{3205380797}}^1$

素因数の和:3205380808

約数の個数: 16

約数和(自身を含む): 288484271820

約数和(自身を除く): 160269039940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3205380797, 6410761594, 12821523188, 16026903985, 25643046376, 32053807970, 64107615940, 128215231880]

約数ペア:

[(1, 128215231880), (2, 64107615940), (4, 32053807970), (5, 25643046376), (8, 16026903985), (10, 12821523188), (20, 6410761594), (40, 3205380797)]