21897407

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{401}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 26049600

約数和(自身を除く): 4152193

約数列:

[1, 7, 29, 203, 269, 401, 1883, 2807, 7801, 11629, 54607, 81403, 107869, 755083, 3128201, 21897407]

約数ペア:

[(1, 21897407), (7, 3128201), (29, 755083), (203, 107869), (269, 81403), (401, 54607), (1883, 11629), (2807, 7801)]