198891

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:72

約数の個数: 36

約数和(自身を含む): 373464

約数和(自身を除く): 174573

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 49, 63, 77, 99, 123, 147, 231, 287, 369, 441, 451, 539, 693, 861, 1353, 1617, 2009, 2583, 3157, 4059, 4851, 6027, 9471, 18081, 22099, 28413, 66297, 198891]

約数ペア:

[(1, 198891), (3, 66297), (7, 28413), (9, 22099), (11, 18081), (21, 9471), (33, 6027), (41, 4851), (49, 4059), (63, 3157), (77, 2583), (99, 2009), (123, 1617), (147, 1353), (231, 861), (287, 693), (369, 539), (441, 451)]