20509866

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{87649}}^1$

素因数の和:87670

約数の個数: 24

約数和(自身を含む): 47856900

約数和(自身を除く): 27347034

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 87649, 175298, 262947, 525894, 788841, 1139437, 1577682, 2278874, 3418311, 6836622, 10254933, 20509866]

約数ペア:

[(1, 20509866), (2, 10254933), (3, 6836622), (6, 3418311), (9, 2278874), (13, 1577682), (18, 1139437), (26, 788841), (39, 525894), (78, 262947), (117, 175298), (234, 87649)]