21530369

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{773}}^1$

素因数の和:976

約数の個数: 16

約数和(自身を含む): 25857792

約数和(自身を除く): 4327423

約数列:

[1, 7, 23, 161, 173, 773, 1211, 3979, 5411, 17779, 27853, 124453, 133729, 936103, 3075767, 21530369]

約数ペア:

[(1, 21530369), (7, 3075767), (23, 936103), (161, 133729), (173, 124453), (773, 27853), (1211, 17779), (3979, 5411)]