208020940

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{40471}}^1$

素因数の和:40737

約数の個数: 24

約数和(自身を含む): 438554592

約数和(自身を除く): 230533652

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 40471, 80942, 161884, 202355, 404710, 809420, 10401047, 20802094, 41604188, 52005235, 104010470, 208020940]

約数ペア:

[(1, 208020940), (2, 104010470), (4, 52005235), (5, 41604188), (10, 20802094), (20, 10401047), (257, 809420), (514, 404710), (1028, 202355), (1285, 161884), (2570, 80942), (5140, 40471)]