20803684

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 21443612

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 61, 92, 122, 244, 253, 337, 506, 671, 674, 1012, 1342, 1348, 1403, 2684, 2806, 3707, 5612, 7414, 7751, 14828, 15433, 15502, 20557, 30866, 31004, 41114, 61732, 82228, 85261, 170522, 226127, 341044, 452254, 472811, 904508, 945622, 1891244, 5200921, 10401842, 20803684]

約数ペア:

[(1, 20803684), (2, 10401842), (4, 5200921), (11, 1891244), (22, 945622), (23, 904508), (44, 472811), (46, 452254), (61, 341044), (92, 226127), (122, 170522), (244, 85261), (253, 82228), (337, 61732), (506, 41114), (671, 31004), (674, 30866), (1012, 20557), (1342, 15502), (1348, 15433), (1403, 14828), (2684, 7751), (2806, 7414), (3707, 5612)]