19967072

素因数分解:

$2^5\times {\mathrm{67}}^2\times {\mathrm{139}}^1$

素因数の和:283

約数の個数: 36

約数和(自身を含む): 40192740

約数和(自身を除く): 20225668

約数列:

[1, 2, 4, 8, 16, 32, 67, 134, 139, 268, 278, 536, 556, 1072, 1112, 2144, 2224, 4448, 4489, 8978, 9313, 17956, 18626, 35912, 37252, 71824, 74504, 143648, 149008, 298016, 623971, 1247942, 2495884, 4991768, 9983536, 19967072]

約数ペア:

[(1, 19967072), (2, 9983536), (4, 4991768), (8, 2495884), (16, 1247942), (32, 623971), (67, 298016), (134, 149008), (139, 143648), (268, 74504), (278, 71824), (536, 37252), (556, 35912), (1072, 18626), (1112, 17956), (2144, 9313), (2224, 8978), (4448, 4489)]