19782580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23003}}^1$

素因数の和:23055

約数の個数: 24

約数和(自身を含む): 42511392

約数和(自身を除く): 22728812

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23003, 46006, 92012, 115015, 230030, 460060, 989129, 1978258, 3956516, 4945645, 9891290, 19782580]

約数ペア:

[(1, 19782580), (2, 9891290), (4, 4945645), (5, 3956516), (10, 1978258), (20, 989129), (43, 460060), (86, 230030), (172, 115015), (215, 92012), (430, 46006), (860, 23003)]