20595981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1259}}^1$

素因数の和:1329

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 13272819

約数列:

[1, 3, 7, 19, 21, 41, 57, 123, 133, 287, 399, 779, 861, 1259, 2337, 3777, 5453, 8813, 16359, 23921, 26439, 51619, 71763, 154857, 167447, 361333, 502341, 980761, 1083999, 2942283, 6865327, 20595981]

約数ペア:

[(1, 20595981), (3, 6865327), (7, 2942283), (19, 1083999), (21, 980761), (41, 502341), (57, 361333), (123, 167447), (133, 154857), (287, 71763), (399, 51619), (779, 26439), (861, 23921), (1259, 16359), (2337, 8813), (3777, 5453)]