20844164

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{479}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 21733756

約数列:

[1, 2, 4, 11, 22, 23, 43, 44, 46, 86, 92, 172, 253, 473, 479, 506, 946, 958, 989, 1012, 1892, 1916, 1978, 3956, 5269, 10538, 10879, 11017, 20597, 21076, 21758, 22034, 41194, 43516, 44068, 82388, 121187, 226567, 242374, 453134, 473731, 484748, 906268, 947462, 1894924, 5211041, 10422082, 20844164]

約数ペア:

[(1, 20844164), (2, 10422082), (4, 5211041), (11, 1894924), (22, 947462), (23, 906268), (43, 484748), (44, 473731), (46, 453134), (86, 242374), (92, 226567), (172, 121187), (253, 82388), (473, 44068), (479, 43516), (506, 41194), (946, 22034), (958, 21758), (989, 21076), (1012, 20597), (1892, 11017), (1916, 10879), (1978, 10538), (3956, 5269)]