20625780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49109}}^1$

素因数の和:49128

約数の個数: 48

約数和(自身を含む): 66003840

約数和(自身を除く): 45378060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49109, 98218, 147327, 196436, 245545, 294654, 343763, 491090, 589308, 687526, 736635, 982180, 1031289, 1375052, 1473270, 1718815, 2062578, 2946540, 3437630, 4125156, 5156445, 6875260, 10312890, 20625780]

約数ペア:

[(1, 20625780), (2, 10312890), (3, 6875260), (4, 5156445), (5, 4125156), (6, 3437630), (7, 2946540), (10, 2062578), (12, 1718815), (14, 1473270), (15, 1375052), (20, 1031289), (21, 982180), (28, 736635), (30, 687526), (35, 589308), (42, 491090), (60, 343763), (70, 294654), (84, 245545), (105, 196436), (140, 147327), (210, 98218), (420, 49109)]