19940427

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1301}}^1$

素因数の和:1451

約数の個数: 24

約数和(自身を含む): 31279248

約数和(自身を除く): 11338821

約数列:

[1, 3, 9, 13, 39, 117, 131, 393, 1179, 1301, 1703, 3903, 5109, 11709, 15327, 16913, 50739, 152217, 170431, 511293, 1533879, 2215603, 6646809, 19940427]

約数ペア:

[(1, 19940427), (3, 6646809), (9, 2215603), (13, 1533879), (39, 511293), (117, 170431), (131, 152217), (393, 50739), (1179, 16913), (1301, 15327), (1703, 11709), (3903, 5109)]