78883880

素因数分解:

$2^3\times 5^1\times {\mathrm{1972097}}^1$

素因数の和:1972108

約数の個数: 16

約数和(自身を含む): 177488820

約数和(自身を除く): 98604940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1972097, 3944194, 7888388, 9860485, 15776776, 19720970, 39441940, 78883880]

約数ペア:

[(1, 78883880), (2, 39441940), (4, 19720970), (5, 15776776), (8, 9860485), (10, 7888388), (20, 3944194), (40, 1972097)]