20971004

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{1291}}^1$

素因数の和:1457

約数の個数: 24

約数和(自身を含む): 38201856

約数和(自身を除く): 17230852

約数列:

[1, 2, 4, 31, 62, 124, 131, 262, 524, 1291, 2582, 4061, 5164, 8122, 16244, 40021, 80042, 160084, 169121, 338242, 676484, 5242751, 10485502, 20971004]

約数ペア:

[(1, 20971004), (2, 10485502), (4, 5242751), (31, 676484), (62, 338242), (124, 169121), (131, 160084), (262, 80042), (524, 40021), (1291, 16244), (2582, 8122), (4061, 5164)]