20704725

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5413}}^1$

素因数の和:5446

約数の個数: 36

約数和(自身を含む): 39273156

約数和(自身を除く): 18568431

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5413, 16239, 27065, 48717, 81195, 92021, 135325, 243585, 276063, 405975, 460105, 828189, 1217925, 1380315, 2300525, 4140945, 6901575, 20704725]

約数ペア:

[(1, 20704725), (3, 6901575), (5, 4140945), (9, 2300525), (15, 1380315), (17, 1217925), (25, 828189), (45, 460105), (51, 405975), (75, 276063), (85, 243585), (153, 135325), (225, 92021), (255, 81195), (425, 48717), (765, 27065), (1275, 16239), (3825, 5413)]