20005244

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 22088836

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 71, 116, 142, 203, 284, 347, 406, 497, 694, 812, 994, 1388, 1988, 2059, 2429, 4118, 4858, 8236, 9716, 10063, 14413, 20126, 24637, 28826, 40252, 49274, 57652, 70441, 98548, 140882, 172459, 281764, 344918, 689836, 714473, 1428946, 2857892, 5001311, 10002622, 20005244]

約数ペア:

[(1, 20005244), (2, 10002622), (4, 5001311), (7, 2857892), (14, 1428946), (28, 714473), (29, 689836), (58, 344918), (71, 281764), (116, 172459), (142, 140882), (203, 98548), (284, 70441), (347, 57652), (406, 49274), (497, 40252), (694, 28826), (812, 24637), (994, 20126), (1388, 14413), (1988, 10063), (2059, 9716), (2429, 8236), (4118, 4858)]