20492517

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 9367323

約数列:

[1, 3, 23, 47, 69, 71, 89, 141, 213, 267, 1081, 1633, 2047, 3243, 3337, 4183, 4899, 6141, 6319, 10011, 12549, 18957, 76751, 96209, 145337, 230253, 288627, 296993, 436011, 890979, 6830839, 20492517]

約数ペア:

[(1, 20492517), (3, 6830839), (23, 890979), (47, 436011), (69, 296993), (71, 288627), (89, 230253), (141, 145337), (213, 96209), (267, 76751), (1081, 18957), (1633, 12549), (2047, 10011), (3243, 6319), (3337, 6141), (4183, 4899)]