20914180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{21341}}^1$

素因数の和:21364

約数の個数: 36

約数和(自身を含む): 51092748

約数和(自身を除く): 30178568

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 21341, 42682, 85364, 106705, 149387, 213410, 298774, 426820, 597548, 746935, 1045709, 1493870, 2091418, 2987740, 4182836, 5228545, 10457090, 20914180]

約数ペア:

[(1, 20914180), (2, 10457090), (4, 5228545), (5, 4182836), (7, 2987740), (10, 2091418), (14, 1493870), (20, 1045709), (28, 746935), (35, 597548), (49, 426820), (70, 298774), (98, 213410), (140, 149387), (196, 106705), (245, 85364), (490, 42682), (980, 21341)]