20605431

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12743}}^1$

素因数の和:12771

約数の個数: 24

約数和(自身を含む): 34867584

約数和(自身を除く): 14262153

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12743, 38229, 89201, 140173, 267603, 420519, 624407, 981211, 1873221, 2943633, 6868477, 20605431]

約数ペア:

[(1, 20605431), (3, 6868477), (7, 2943633), (11, 1873221), (21, 981211), (33, 624407), (49, 420519), (77, 267603), (147, 140173), (231, 89201), (539, 38229), (1617, 12743)]