78043880

素因数分解:

$2^3\times 5^1\times {\mathrm{1951097}}^1$

素因数の和:1951108

約数の個数: 16

約数和(自身を含む): 175598820

約数和(自身を除く): 97554940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1951097, 3902194, 7804388, 9755485, 15608776, 19510970, 39021940, 78043880]

約数ペア:

[(1, 78043880), (2, 39021940), (4, 19510970), (5, 15608776), (8, 9755485), (10, 7804388), (20, 3902194), (40, 1951097)]