71490681

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 112071168

約数和(自身を除く): 40580487

約数列:

[1, 3, 9, 27, 31, 71, 81, 93, 213, 279, 401, 639, 837, 1203, 1917, 2201, 2511, 3609, 5751, 6603, 10827, 12431, 19809, 28471, 32481, 37293, 59427, 85413, 111879, 178281, 256239, 335637, 768717, 882601, 1006911, 2306151, 2647803, 7943409, 23830227, 71490681]

約数ペア:

[(1, 71490681), (3, 23830227), (9, 7943409), (27, 2647803), (31, 2306151), (71, 1006911), (81, 882601), (93, 768717), (213, 335637), (279, 256239), (401, 178281), (639, 111879), (837, 85413), (1203, 59427), (1917, 37293), (2201, 32481), (2511, 28471), (3609, 19809), (5751, 12431), (6603, 10827)]