19481680

素因数分解:

$2^4\times 5^1\times {\mathrm{243521}}^1$

素因数の和:243534

約数の個数: 20

約数和(自身を含む): 45295092

約数和(自身を除く): 25813412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243521, 487042, 974084, 1217605, 1948168, 2435210, 3896336, 4870420, 9740840, 19481680]

約数ペア:

[(1, 19481680), (2, 9740840), (4, 4870420), (5, 3896336), (8, 2435210), (10, 1948168), (16, 1217605), (20, 974084), (40, 487042), (80, 243521)]