78291760

素因数分解:

$2^4\times 5^1\times {\mathrm{978647}}^1$

素因数の和:978660

約数の個数: 20

約数和(自身を含む): 182028528

約数和(自身を除く): 103736768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 978647, 1957294, 3914588, 4893235, 7829176, 9786470, 15658352, 19572940, 39145880, 78291760]

約数ペア:

[(1, 78291760), (2, 39145880), (4, 19572940), (5, 15658352), (8, 9786470), (10, 7829176), (16, 4893235), (20, 3914588), (40, 1957294), (80, 978647)]