20178406780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20590211}}^1$

素因数の和:20590234

約数の個数: 36

約数和(自身を含む): 49292967528

約数和(自身を除く): 29114560748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20590211, 41180422, 82360844, 102951055, 144131477, 205902110, 288262954, 411804220, 576525908, 720657385, 1008920339, 1441314770, 2017840678, 2882629540, 4035681356, 5044601695, 10089203390, 20178406780]

約数ペア:

[(1, 20178406780), (2, 10089203390), (4, 5044601695), (5, 4035681356), (7, 2882629540), (10, 2017840678), (14, 1441314770), (20, 1008920339), (28, 720657385), (35, 576525908), (49, 411804220), (70, 288262954), (98, 205902110), (140, 144131477), (196, 102951055), (245, 82360844), (490, 41180422), (980, 20590211)]