21427707

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^2\times {\mathrm{607}}^1$

素因数の和:699

約数の個数: 24

約数和(自身を含む): 33522688

約数和(自身を除く): 12094981

約数列:

[1, 3, 7, 21, 41, 123, 287, 607, 861, 1681, 1821, 4249, 5043, 11767, 12747, 24887, 35301, 74661, 174209, 522627, 1020367, 3061101, 7142569, 21427707]

約数ペア:

[(1, 21427707), (3, 7142569), (7, 3061101), (21, 1020367), (41, 522627), (123, 174209), (287, 74661), (607, 35301), (861, 24887), (1681, 12747), (1821, 11767), (4249, 5043)]