20291103

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 35043840

約数和(自身を除く): 14752737

約数列:

[1, 3, 7, 9, 21, 53, 59, 63, 103, 159, 177, 309, 371, 413, 477, 531, 721, 927, 1113, 1239, 2163, 3127, 3339, 3717, 5459, 6077, 6489, 9381, 16377, 18231, 21889, 28143, 38213, 42539, 49131, 54693, 65667, 114639, 127617, 197001, 322081, 343917, 382851, 966243, 2254567, 2898729, 6763701, 20291103]

約数ペア:

[(1, 20291103), (3, 6763701), (7, 2898729), (9, 2254567), (21, 966243), (53, 382851), (59, 343917), (63, 322081), (103, 197001), (159, 127617), (177, 114639), (309, 65667), (371, 54693), (413, 49131), (477, 42539), (531, 38213), (721, 28143), (927, 21889), (1113, 18231), (1239, 16377), (2163, 9381), (3127, 6489), (3339, 6077), (3717, 5459)]