21287079

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4057}}^1$

素因数の和:4127

約数の個数: 24

約数和(自身を含む): 34184592

約数和(自身を除く): 12897513

約数列:

[1, 3, 9, 11, 33, 53, 99, 159, 477, 583, 1749, 4057, 5247, 12171, 36513, 44627, 133881, 215021, 401643, 645063, 1935189, 2365231, 7095693, 21287079]

約数ペア:

[(1, 21287079), (3, 7095693), (9, 2365231), (11, 1935189), (33, 645063), (53, 401643), (99, 215021), (159, 133881), (477, 44627), (583, 36513), (1749, 12171), (4057, 5247)]