20604280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9719}}^1$

素因数の和:9783

約数の個数: 32

約数和(自身を含む): 47239200

約数和(自身を除く): 26634920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9719, 19438, 38876, 48595, 77752, 97190, 194380, 388760, 515107, 1030214, 2060428, 2575535, 4120856, 5151070, 10302140, 20604280]

約数ペア:

[(1, 20604280), (2, 10302140), (4, 5151070), (5, 4120856), (8, 2575535), (10, 2060428), (20, 1030214), (40, 515107), (53, 388760), (106, 194380), (212, 97190), (265, 77752), (424, 48595), (530, 38876), (1060, 19438), (2120, 9719)]