78906640

素因数分解:

$2^4\times 5^1\times {\mathrm{986333}}^1$

素因数の和:986346

約数の個数: 20

約数和(自身を含む): 183458124

約数和(自身を除く): 104551484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 986333, 1972666, 3945332, 4931665, 7890664, 9863330, 15781328, 19726660, 39453320, 78906640]

約数ペア:

[(1, 78906640), (2, 39453320), (4, 19726660), (5, 15781328), (8, 9863330), (10, 7890664), (16, 4931665), (20, 3945332), (40, 1972666), (80, 986333)]