78561680

素因数分解:

$2^4\times 5^1\times {\mathrm{982021}}^1$

素因数の和:982034

約数の個数: 20

約数和(自身を含む): 182656092

約数和(自身を除く): 104094412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 982021, 1964042, 3928084, 4910105, 7856168, 9820210, 15712336, 19640420, 39280840, 78561680]

約数ペア:

[(1, 78561680), (2, 39280840), (4, 19640420), (5, 15712336), (8, 9820210), (10, 7856168), (16, 4910105), (20, 3928084), (40, 1964042), (80, 982021)]