20865208

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{28661}}^1$

素因数の和:28687

約数の個数: 32

約数和(自身を含む): 48152160

約数和(自身を除く): 27286952

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 28661, 57322, 114644, 200627, 229288, 372593, 401254, 745186, 802508, 1490372, 1605016, 2608151, 2980744, 5216302, 10432604, 20865208]

約数ペア:

[(1, 20865208), (2, 10432604), (4, 5216302), (7, 2980744), (8, 2608151), (13, 1605016), (14, 1490372), (26, 802508), (28, 745186), (52, 401254), (56, 372593), (91, 229288), (104, 200627), (182, 114644), (364, 57322), (728, 28661)]