19783960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70657}}^1$

素因数の和:70675

約数の個数: 32

約数和(自身を含む): 50873760

約数和(自身を除く): 31089800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70657, 141314, 282628, 353285, 494599, 565256, 706570, 989198, 1413140, 1978396, 2472995, 2826280, 3956792, 4945990, 9891980, 19783960]

約数ペア:

[(1, 19783960), (2, 9891980), (4, 4945990), (5, 3956792), (7, 2826280), (8, 2472995), (10, 1978396), (14, 1413140), (20, 989198), (28, 706570), (35, 565256), (40, 494599), (56, 353285), (70, 282628), (140, 141314), (280, 70657)]