21147133

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 27648000

約数和(自身を除く): 6500867

約数列:

[1, 7, 17, 19, 47, 119, 133, 199, 323, 329, 799, 893, 1393, 2261, 3383, 3781, 5593, 6251, 9353, 15181, 23681, 26467, 64277, 65471, 106267, 159001, 177707, 449939, 1113007, 1243949, 3021019, 21147133]

約数ペア:

[(1, 21147133), (7, 3021019), (17, 1243949), (19, 1113007), (47, 449939), (119, 177707), (133, 159001), (199, 106267), (323, 65471), (329, 64277), (799, 26467), (893, 23681), (1393, 15181), (2261, 9353), (3383, 6251), (3781, 5593)]