221396021

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{1223}}^1\times {\mathrm{2351}}^1$

素因数の和:3592

約数の個数: 16

約数和(自身を含む): 276369408

約数和(自身を除く): 54973387

約数列:

[1, 7, 11, 77, 1223, 2351, 8561, 13453, 16457, 25861, 94171, 181027, 2875273, 20126911, 31628003, 221396021]

約数ペア:

[(1, 221396021), (7, 31628003), (11, 20126911), (77, 2875273), (1223, 181027), (2351, 94171), (8561, 25861), (13453, 16457)]