78917680

素因数分解:

$2^4\times 5^1\times {\mathrm{986471}}^1$

素因数の和:986484

約数の個数: 20

約数和(自身を含む): 183483792

約数和(自身を除く): 104566112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986471, 1972942, 3945884, 4932355, 7891768, 9864710, 15783536, 19729420, 39458840, 78917680]

約数ペア:

[(1, 78917680), (2, 39458840), (4, 19729420), (5, 15783536), (8, 9864710), (10, 7891768), (16, 4932355), (20, 3945884), (40, 1972942), (80, 986471)]