20676008

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{317}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 40296960

約数和(自身を除く): 19620952

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 263, 317, 526, 634, 1052, 1268, 2104, 2536, 8153, 9827, 16306, 19654, 32612, 39308, 65224, 78616, 83371, 166742, 333484, 666968, 2584501, 5169002, 10338004, 20676008]

約数ペア:

[(1, 20676008), (2, 10338004), (4, 5169002), (8, 2584501), (31, 666968), (62, 333484), (124, 166742), (248, 83371), (263, 78616), (317, 65224), (526, 39308), (634, 32612), (1052, 19654), (1268, 16306), (2104, 9827), (2536, 8153)]