20228180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20641}}^1$

素因数の和:20664

約数の個数: 36

約数和(自身を含む): 49416948

約数和(自身を除く): 29188768

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20641, 41282, 82564, 103205, 144487, 206410, 288974, 412820, 577948, 722435, 1011409, 1444870, 2022818, 2889740, 4045636, 5057045, 10114090, 20228180]

約数ペア:

[(1, 20228180), (2, 10114090), (4, 5057045), (5, 4045636), (7, 2889740), (10, 2022818), (14, 1444870), (20, 1011409), (28, 722435), (35, 577948), (49, 412820), (70, 288974), (98, 206410), (140, 144487), (196, 103205), (245, 82564), (490, 41282), (980, 20641)]