81439216

素因数分解:

$2^4\times {\mathrm{103}}^1\times {\mathrm{49417}}^1$

素因数の和:49528

約数の個数: 20

約数和(自身を含む): 159323632

約数和(自身を除く): 77884416

約数列:

[1, 2, 4, 8, 16, 103, 206, 412, 824, 1648, 49417, 98834, 197668, 395336, 790672, 5089951, 10179902, 20359804, 40719608, 81439216]

約数ペア:

[(1, 81439216), (2, 40719608), (4, 20359804), (8, 10179902), (16, 5089951), (103, 790672), (206, 395336), (412, 197668), (824, 98834), (1648, 49417)]