21084988

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{1549}}^1$

素因数の和:1677

約数の個数: 24

約数和(自身を含む): 38278800

約数和(自身を除く): 17193812

約数列:

[1, 2, 4, 41, 82, 83, 164, 166, 332, 1549, 3098, 3403, 6196, 6806, 13612, 63509, 127018, 128567, 254036, 257134, 514268, 5271247, 10542494, 21084988]

約数ペア:

[(1, 21084988), (2, 10542494), (4, 5271247), (41, 514268), (82, 257134), (83, 254036), (164, 128567), (166, 127018), (332, 63509), (1549, 13612), (3098, 6806), (3403, 6196)]