18250281

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2281}}^1$

素因数の和:2421

約数の個数: 24

約数和(自身を含む): 30377984

約数和(自身を除く): 12127703

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2281, 2667, 6843, 8001, 15967, 20529, 47901, 143703, 289687, 869061, 2027809, 2607183, 6083427, 18250281]

約数ペア:

[(1, 18250281), (3, 6083427), (7, 2607183), (9, 2027809), (21, 869061), (63, 289687), (127, 143703), (381, 47901), (889, 20529), (1143, 15967), (2281, 8001), (2667, 6843)]