20459817

素因数分解:

$3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1051}}^1$

素因数の和:1170

約数の個数: 32

約数和(自身を含む): 35010560

約数和(自身を除く): 14550743

約数列:

[1, 3, 7, 9, 21, 27, 63, 103, 189, 309, 721, 927, 1051, 2163, 2781, 3153, 6489, 7357, 9459, 19467, 22071, 28377, 66213, 108253, 198639, 324759, 757771, 974277, 2273313, 2922831, 6819939, 20459817]

約数ペア:

[(1, 20459817), (3, 6819939), (7, 2922831), (9, 2273313), (21, 974277), (27, 757771), (63, 324759), (103, 198639), (189, 108253), (309, 66213), (721, 28377), (927, 22071), (1051, 19467), (2163, 9459), (2781, 7357), (3153, 6489)]