221464904

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{389903}}^1$

素因数の和:389980

約数の個数: 16

約数和(自身を含む): 421096320

約数和(自身を除く): 199631416

約数列:

[1, 2, 4, 8, 71, 142, 284, 568, 389903, 779806, 1559612, 3119224, 27683113, 55366226, 110732452, 221464904]

約数ペア:

[(1, 221464904), (2, 110732452), (4, 55366226), (8, 27683113), (71, 3119224), (142, 1559612), (284, 779806), (568, 389903)]