21782173

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{701}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 26148096

約数和(自身を除く): 4365923

約数列:

[1, 7, 23, 161, 193, 701, 1351, 4439, 4907, 16123, 31073, 112861, 135293, 947051, 3111739, 21782173]

約数ペア:

[(1, 21782173), (7, 3111739), (23, 947051), (161, 135293), (193, 112861), (701, 31073), (1351, 16123), (4439, 4907)]