20804812

素因数分解:

$2^2\times 7^2\times {\mathrm{179}}^1\times {\mathrm{593}}^1$

素因数の和:790

約数の個数: 36

約数和(自身を含む): 42661080

約数和(自身を除く): 21856268

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 179, 196, 358, 593, 716, 1186, 1253, 2372, 2506, 4151, 5012, 8302, 8771, 16604, 17542, 29057, 35084, 58114, 106147, 116228, 212294, 424588, 743029, 1486058, 2972116, 5201203, 10402406, 20804812]

約数ペア:

[(1, 20804812), (2, 10402406), (4, 5201203), (7, 2972116), (14, 1486058), (28, 743029), (49, 424588), (98, 212294), (179, 116228), (196, 106147), (358, 58114), (593, 35084), (716, 29057), (1186, 17542), (1253, 16604), (2372, 8771), (2506, 8302), (4151, 5012)]