28366840

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{3361}}^1$

素因数の和:3583

約数の個数: 32

約数和(自身を含む): 64146960

約数和(自身を除く): 35780120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 3361, 4220, 6722, 8440, 13444, 16805, 26888, 33610, 67220, 134440, 709171, 1418342, 2836684, 3545855, 5673368, 7091710, 14183420, 28366840]

約数ペア:

[(1, 28366840), (2, 14183420), (4, 7091710), (5, 5673368), (8, 3545855), (10, 2836684), (20, 1418342), (40, 709171), (211, 134440), (422, 67220), (844, 33610), (1055, 26888), (1688, 16805), (2110, 13444), (3361, 8440), (4220, 6722)]