18425991

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 27302400

約数和(自身を除く): 8876409

約数列:

[1, 3, 19, 29, 57, 71, 87, 157, 213, 471, 551, 1349, 1653, 2059, 2983, 4047, 4553, 6177, 8949, 11147, 13659, 33441, 39121, 86507, 117363, 211793, 259521, 323263, 635379, 969789, 6141997, 18425991]

約数ペア:

[(1, 18425991), (3, 6141997), (19, 969789), (29, 635379), (57, 323263), (71, 259521), (87, 211793), (157, 117363), (213, 86507), (471, 39121), (551, 33441), (1349, 13659), (1653, 11147), (2059, 8949), (2983, 6177), (4047, 4553)]