51507760

素因数分解:

$2^4\times 5^1\times {\mathrm{643847}}^1$

素因数の和:643860

約数の個数: 20

約数和(自身を含む): 119755728

約数和(自身を除く): 68247968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643847, 1287694, 2575388, 3219235, 5150776, 6438470, 10301552, 12876940, 25753880, 51507760]

約数ペア:

[(1, 51507760), (2, 25753880), (4, 12876940), (5, 10301552), (8, 6438470), (10, 5150776), (16, 3219235), (20, 2575388), (40, 1287694), (80, 643847)]