21000724780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21429311}}^1$

素因数の和:21429334

約数の個数: 36

約数和(自身を含む): 51301772928

約数和(自身を除く): 30301048148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21429311, 42858622, 85717244, 107146555, 150005177, 214293110, 300010354, 428586220, 600020708, 750025885, 1050036239, 1500051770, 2100072478, 3000103540, 4200144956, 5250181195, 10500362390, 21000724780]

約数ペア:

[(1, 21000724780), (2, 10500362390), (4, 5250181195), (5, 4200144956), (7, 3000103540), (10, 2100072478), (14, 1500051770), (20, 1050036239), (28, 750025885), (35, 600020708), (49, 428586220), (70, 300010354), (98, 214293110), (140, 150005177), (196, 107146555), (245, 85717244), (490, 42858622), (980, 21429311)]