21624040

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1549}}^1$

素因数の和:1909

約数の個数: 32

約数和(自身を含む): 48825000

約数和(自身を除く): 27200960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1549, 1745, 2792, 3098, 3490, 6196, 6980, 7745, 12392, 13960, 15490, 30980, 61960, 540601, 1081202, 2162404, 2703005, 4324808, 5406010, 10812020, 21624040]

約数ペア:

[(1, 21624040), (2, 10812020), (4, 5406010), (5, 4324808), (8, 2703005), (10, 2162404), (20, 1081202), (40, 540601), (349, 61960), (698, 30980), (1396, 15490), (1549, 13960), (1745, 12392), (2792, 7745), (3098, 6980), (3490, 6196)]