42505000

素因数分解:

$2^3\times 5^4\times {\mathrm{8501}}^1$

素因数の和:8527

約数の個数: 40

約数和(自身を含む): 99600930

約数和(自身を除く): 57095930

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 8501, 17002, 34004, 42505, 68008, 85010, 170020, 212525, 340040, 425050, 850100, 1062625, 1700200, 2125250, 4250500, 5313125, 8501000, 10626250, 21252500, 42505000]

約数ペア:

[(1, 42505000), (2, 21252500), (4, 10626250), (5, 8501000), (8, 5313125), (10, 4250500), (20, 2125250), (25, 1700200), (40, 1062625), (50, 850100), (100, 425050), (125, 340040), (200, 212525), (250, 170020), (500, 85010), (625, 68008), (1000, 42505), (1250, 34004), (2500, 17002), (5000, 8501)]