39963920

素因数分解:

$2^4\times 5^1\times {\mathrm{499549}}^1$

素因数の和:499562

約数の個数: 20

約数和(自身を含む): 92916300

約数和(自身を除く): 52952380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499549, 999098, 1998196, 2497745, 3996392, 4995490, 7992784, 9990980, 19981960, 39963920]

約数ペア:

[(1, 39963920), (2, 19981960), (4, 9990980), (5, 7992784), (8, 4995490), (10, 3996392), (16, 2497745), (20, 1998196), (40, 999098), (80, 499549)]