20431677

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1061}}^1$

素因数の和:1209

約数の個数: 24

約数和(自身を含む): 31961952

約数和(自身を除く): 11530275

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 1061, 2751, 3183, 6419, 7427, 19257, 22281, 51989, 138991, 155967, 416973, 972937, 2918811, 6810559, 20431677]

約数ペア:

[(1, 20431677), (3, 6810559), (7, 2918811), (21, 972937), (49, 416973), (131, 155967), (147, 138991), (393, 51989), (917, 22281), (1061, 19257), (2751, 7427), (3183, 6419)]