20865724

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2269}}^1$

素因数の和:2314

約数の個数: 36

約数和(自身を含む): 42267400

約数和(自身を除く): 21401676

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2269, 2299, 4538, 4598, 9076, 9196, 24959, 43111, 49918, 86222, 99836, 172444, 274549, 474221, 549098, 948442, 1098196, 1896884, 5216431, 10432862, 20865724]

約数ペア:

[(1, 20865724), (2, 10432862), (4, 5216431), (11, 1896884), (19, 1098196), (22, 948442), (38, 549098), (44, 474221), (76, 274549), (121, 172444), (209, 99836), (242, 86222), (418, 49918), (484, 43111), (836, 24959), (2269, 9196), (2299, 9076), (4538, 4598)]