205918412

素因数分解:

$2^2\times 7^1\times {\mathrm{409}}^1\times {\mathrm{17981}}^1$

素因数の和:18401

約数の個数: 24

約数和(自身を含む): 412866720

約数和(自身を除く): 206948308

約数列:

[1, 2, 4, 7, 14, 28, 409, 818, 1636, 2863, 5726, 11452, 17981, 35962, 71924, 125867, 251734, 503468, 7354229, 14708458, 29416916, 51479603, 102959206, 205918412]

約数ペア:

[(1, 205918412), (2, 102959206), (4, 51479603), (7, 29416916), (14, 14708458), (28, 7354229), (409, 503468), (818, 251734), (1636, 125867), (2863, 71924), (5726, 35962), (11452, 17981)]