66684440

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{7901}}^1$

素因数の和:8123

約数の個数: 32

約数和(自身を含む): 150770160

約数和(自身を除く): 84085720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 7901, 8440, 15802, 31604, 39505, 63208, 79010, 158020, 316040, 1667111, 3334222, 6668444, 8335555, 13336888, 16671110, 33342220, 66684440]

約数ペア:

[(1, 66684440), (2, 33342220), (4, 16671110), (5, 13336888), (8, 8335555), (10, 6668444), (20, 3334222), (40, 1667111), (211, 316040), (422, 158020), (844, 79010), (1055, 63208), (1688, 39505), (2110, 31604), (4220, 15802), (7901, 8440)]