20787400

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4519}}^1$

素因数の和:4558

約数の個数: 48

約数和(自身を含む): 50443200

約数和(自身を除く): 29655800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4519, 4600, 9038, 18076, 22595, 36152, 45190, 90380, 103937, 112975, 180760, 207874, 225950, 415748, 451900, 519685, 831496, 903800, 1039370, 2078740, 2598425, 4157480, 5196850, 10393700, 20787400]

約数ペア:

[(1, 20787400), (2, 10393700), (4, 5196850), (5, 4157480), (8, 2598425), (10, 2078740), (20, 1039370), (23, 903800), (25, 831496), (40, 519685), (46, 451900), (50, 415748), (92, 225950), (100, 207874), (115, 180760), (184, 112975), (200, 103937), (230, 90380), (460, 45190), (575, 36152), (920, 22595), (1150, 18076), (2300, 9038), (4519, 4600)]