222718727

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{20809}}^1$

素因数の和:20966

約数の個数: 16

約数和(自身を含む): 279686400

約数和(自身を除く): 56967673

約数列:

[1, 7, 11, 77, 139, 973, 1529, 10703, 20809, 145663, 228899, 1602293, 2892451, 20247157, 31816961, 222718727]

約数ペア:

[(1, 222718727), (7, 31816961), (11, 20247157), (77, 2892451), (139, 1602293), (973, 228899), (1529, 145663), (10703, 20809)]