128878384

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{350213}}^1$

素因数の和:350244

約数の個数: 20

約数和(自身を含む): 260559216

約数和(自身を除く): 131680832

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 350213, 700426, 1400852, 2801704, 5603408, 8054899, 16109798, 32219596, 64439192, 128878384]

約数ペア:

[(1, 128878384), (2, 64439192), (4, 32219596), (8, 16109798), (16, 8054899), (23, 5603408), (46, 2801704), (92, 1400852), (184, 700426), (368, 350213)]