389619760

素因数分解:

$2^4\times 5^1\times {\mathrm{4870247}}^1$

素因数の和:4870260

約数の個数: 20

約数和(自身を含む): 905866128

約数和(自身を除く): 516246368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4870247, 9740494, 19480988, 24351235, 38961976, 48702470, 77923952, 97404940, 194809880, 389619760]

約数ペア:

[(1, 389619760), (2, 194809880), (4, 97404940), (5, 77923952), (8, 48702470), (10, 38961976), (16, 24351235), (20, 19480988), (40, 9740494), (80, 4870247)]