18881307

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1013}}^1$

素因数の和:1147

約数の個数: 24

約数和(自身を含む): 29000400

約数和(自身を除く): 10119093

約数列:

[1, 3, 9, 19, 57, 109, 171, 327, 981, 1013, 2071, 3039, 6213, 9117, 18639, 19247, 57741, 110417, 173223, 331251, 993753, 2097923, 6293769, 18881307]

約数ペア:

[(1, 18881307), (3, 6293769), (9, 2097923), (19, 993753), (57, 331251), (109, 173223), (171, 110417), (327, 57741), (981, 19247), (1013, 18639), (2071, 9117), (3039, 6213)]