164422520

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{10567}}^1$

素因数の和:10967

約数の個数: 32

約数和(自身を含む): 370936800

約数和(自身を除く): 206514280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 10567, 15560, 21134, 42268, 52835, 84536, 105670, 211340, 422680, 4110563, 8221126, 16442252, 20552815, 32884504, 41105630, 82211260, 164422520]

約数ペア:

[(1, 164422520), (2, 82211260), (4, 41105630), (5, 32884504), (8, 20552815), (10, 16442252), (20, 8221126), (40, 4110563), (389, 422680), (778, 211340), (1556, 105670), (1945, 84536), (3112, 52835), (3890, 42268), (7780, 21134), (10567, 15560)]