19400679

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 28802592

約数和(自身を除く): 9401913

約数列:

[1, 3, 9, 71, 97, 213, 291, 313, 639, 873, 939, 2817, 6887, 20661, 22223, 30361, 61983, 66669, 91083, 200007, 273249, 2155631, 6466893, 19400679]

約数ペア:

[(1, 19400679), (3, 6466893), (9, 2155631), (71, 273249), (97, 200007), (213, 91083), (291, 66669), (313, 61983), (639, 30361), (873, 22223), (939, 20661), (2817, 6887)]