19857180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47279}}^1$

素因数の和:47298

約数の個数: 48

約数和(自身を含む): 63544320

約数和(自身を除く): 43687140

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, 47279, 94558, 141837, 189116, 236395, 283674, 330953, 472790, 567348, 661906, 709185, 945580, 992859, 1323812, 1418370, 1654765, 1985718, 2836740, 3309530, 3971436, 4964295, 6619060, 9928590, 19857180]

約数ペア:

[(1, 19857180), (2, 9928590), (3, 6619060), (4, 4964295), (5, 3971436), (6, 3309530), (7, 2836740), (10, 1985718), (12, 1654765), (14, 1418370), (15, 1323812), (20, 992859), (21, 945580), (28, 709185), (30, 661906), (35, 567348), (42, 472790), (60, 330953), (70, 283674), (84, 236395), (105, 189116), (140, 141837), (210, 94558), (420, 47279)]