20497419

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{227}}^1$

素因数の和:439

約数の個数: 24

約数和(自身を含む): 30351360

約数和(自身を除く): 9853941

約数列:

[1, 3, 9, 79, 127, 227, 237, 381, 681, 711, 1143, 2043, 10033, 17933, 28829, 30099, 53799, 86487, 90297, 161397, 259461, 2277491, 6832473, 20497419]

約数ペア:

[(1, 20497419), (3, 6832473), (9, 2277491), (79, 259461), (127, 161397), (227, 90297), (237, 86487), (381, 53799), (681, 30099), (711, 28829), (1143, 17933), (2043, 10033)]