256430463760

素因数分解:

$2^4\times 5^1\times {\mathrm{3205380797}}^1$

素因数の和:3205380810

約数の個数: 20

約数和(自身を含む): 596200828428

約数和(自身を除く): 339770364668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3205380797, 6410761594, 12821523188, 16026903985, 25643046376, 32053807970, 51286092752, 64107615940, 128215231880, 256430463760]

約数ペア:

[(1, 256430463760), (2, 128215231880), (4, 64107615940), (5, 51286092752), (8, 32053807970), (10, 25643046376), (16, 16026903985), (20, 12821523188), (40, 6410761594), (80, 3205380797)]