220447928

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{640837}}^1$

素因数の和:640886

約数の個数: 16

約数和(自身を含む): 422953080

約数和(自身を除く): 202505152

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 640837, 1281674, 2563348, 5126696, 27555991, 55111982, 110223964, 220447928]

約数ペア:

[(1, 220447928), (2, 110223964), (4, 55111982), (8, 27555991), (43, 5126696), (86, 2563348), (172, 1281674), (344, 640837)]