30819920

素因数分解:

$2^4\times 5^1\times {\mathrm{385249}}^1$

素因数の和:385262

約数の個数: 20

約数和(自身を含む): 71656500

約数和(自身を除く): 40836580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 385249, 770498, 1540996, 1926245, 3081992, 3852490, 6163984, 7704980, 15409960, 30819920]

約数ペア:

[(1, 30819920), (2, 15409960), (4, 7704980), (5, 6163984), (8, 3852490), (10, 3081992), (16, 1926245), (20, 1540996), (40, 770498), (80, 385249)]