221235710

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{55171}}^1$

素因数の和:55579

約数の個数: 16

約数和(自身を含む): 399224592

約数和(自身を除く): 177988882

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 55171, 110342, 275855, 551710, 22123571, 44247142, 110617855, 221235710]

約数ペア:

[(1, 221235710), (2, 110617855), (5, 44247142), (10, 22123571), (401, 551710), (802, 275855), (2005, 110342), (4010, 55171)]