15928720

素因数分解:

$2^4\times 5^1\times {\mathrm{199109}}^1$

素因数の和:199122

約数の個数: 20

約数和(自身を含む): 37034460

約数和(自身を除く): 21105740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199109, 398218, 796436, 995545, 1592872, 1991090, 3185744, 3982180, 7964360, 15928720]

約数ペア:

[(1, 15928720), (2, 7964360), (4, 3982180), (5, 3185744), (8, 1991090), (10, 1592872), (16, 995545), (20, 796436), (40, 398218), (80, 199109)]