20486445

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20985555

約数列:

[1, 3, 5, 7, 15, 17, 21, 23, 35, 51, 69, 85, 105, 115, 119, 161, 255, 345, 357, 391, 483, 499, 595, 805, 1173, 1497, 1785, 1955, 2415, 2495, 2737, 3493, 5865, 7485, 8211, 8483, 10479, 11477, 13685, 17465, 25449, 34431, 41055, 42415, 52395, 57385, 59381, 80339, 127245, 172155, 178143, 195109, 241017, 296905, 401695, 585327, 890715, 975545, 1205085, 1365763, 2926635, 4097289, 6828815, 20486445]

約数ペア:

[(1, 20486445), (3, 6828815), (5, 4097289), (7, 2926635), (15, 1365763), (17, 1205085), (21, 975545), (23, 890715), (35, 585327), (51, 401695), (69, 296905), (85, 241017), (105, 195109), (115, 178143), (119, 172155), (161, 127245), (255, 80339), (345, 59381), (357, 57385), (391, 52395), (483, 42415), (499, 41055), (595, 34431), (805, 25449), (1173, 17465), (1497, 13685), (1785, 11477), (1955, 10479), (2415, 8483), (2495, 8211), (2737, 7485), (3493, 5865)]