20402371

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:175

約数の個数: 32

約数和(自身を含む): 25067520

約数和(自身を除く): 4665149

約数列:

[1, 11, 19, 31, 47, 67, 209, 341, 517, 589, 737, 893, 1273, 1457, 2077, 3149, 6479, 9823, 14003, 16027, 22847, 27683, 34639, 39463, 59831, 97619, 304513, 434093, 658141, 1073809, 1854761, 20402371]

約数ペア:

[(1, 20402371), (11, 1854761), (19, 1073809), (31, 658141), (47, 434093), (67, 304513), (209, 97619), (341, 59831), (517, 39463), (589, 34639), (737, 27683), (893, 22847), (1273, 16027), (1457, 14003), (2077, 9823), (3149, 6479)]