389637680

素因数分解:

$2^4\times 5^1\times {\mathrm{4870471}}^1$

素因数の和:4870484

約数の個数: 20

約数和(自身を含む): 905907792

約数和(自身を除く): 516270112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4870471, 9740942, 19481884, 24352355, 38963768, 48704710, 77927536, 97409420, 194818840, 389637680]

約数ペア:

[(1, 389637680), (2, 194818840), (4, 97409420), (5, 77927536), (8, 48704710), (10, 38963768), (16, 24352355), (20, 19481884), (40, 9740942), (80, 4870471)]