20989089

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{5171}}^1$

素因数の和:5229

約数の個数: 24

約数和(自身を含む): 33886944

約数和(自身を除く): 12897855

約数列:

[1, 3, 9, 11, 33, 41, 99, 123, 369, 451, 1353, 4059, 5171, 15513, 46539, 56881, 170643, 212011, 511929, 636033, 1908099, 2332121, 6996363, 20989089]

約数ペア:

[(1, 20989089), (3, 6996363), (9, 2332121), (11, 1908099), (33, 636033), (41, 511929), (99, 212011), (123, 170643), (369, 56881), (451, 46539), (1353, 15513), (4059, 5171)]