20704740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49297}}^1$

素因数の和:49316

約数の個数: 48

約数和(自身を含む): 66256512

約数和(自身を除く): 45551772

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, 49297, 98594, 147891, 197188, 246485, 295782, 345079, 492970, 591564, 690158, 739455, 985940, 1035237, 1380316, 1478910, 1725395, 2070474, 2957820, 3450790, 4140948, 5176185, 6901580, 10352370, 20704740]

約数ペア:

[(1, 20704740), (2, 10352370), (3, 6901580), (4, 5176185), (5, 4140948), (6, 3450790), (7, 2957820), (10, 2070474), (12, 1725395), (14, 1478910), (15, 1380316), (20, 1035237), (21, 985940), (28, 739455), (30, 690158), (35, 591564), (42, 492970), (60, 345079), (70, 295782), (84, 246485), (105, 197188), (140, 147891), (210, 98594), (420, 49297)]