21387454

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15937}}^1$

素因数の和:16011

約数の個数: 16

約数和(自身を含む): 35573616

約数和(自身を除く): 14186162

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 15937, 31874, 175307, 350614, 972157, 1944314, 10693727, 21387454]

約数ペア:

[(1, 21387454), (2, 10693727), (11, 1944314), (22, 972157), (61, 350614), (122, 175307), (671, 31874), (1342, 15937)]