15981200

素因数分解:

$2^4\times 5^2\times {\mathrm{39953}}^1$

素因数の和:39971

約数の個数: 30

約数和(自身を含む): 38395794

約数和(自身を除く): 22414594

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 39953, 79906, 159812, 199765, 319624, 399530, 639248, 799060, 998825, 1598120, 1997650, 3196240, 3995300, 7990600, 15981200]

約数ペア:

[(1, 15981200), (2, 7990600), (4, 3995300), (5, 3196240), (8, 1997650), (10, 1598120), (16, 998825), (20, 799060), (25, 639248), (40, 399530), (50, 319624), (80, 199765), (100, 159812), (200, 79906), (400, 39953)]