19956940

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2273}}^1$

素因数の和:2721

約数の個数: 24

約数和(自身を含む): 42023520

約数和(自身を除く): 22066580

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2273, 4390, 4546, 8780, 9092, 11365, 22730, 45460, 997847, 1995694, 3991388, 4989235, 9978470, 19956940]

約数ペア:

[(1, 19956940), (2, 9978470), (4, 4989235), (5, 3991388), (10, 1995694), (20, 997847), (439, 45460), (878, 22730), (1756, 11365), (2195, 9092), (2273, 8780), (4390, 4546)]