68990000

素因数分解:

$2^4\times 5^4\times {\mathrm{6899}}^1$

素因数の和:6927

約数の個数: 50

約数和(自身を含む): 167055900

約数和(自身を除く): 98065900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 6899, 10000, 13798, 27596, 34495, 55192, 68990, 110384, 137980, 172475, 275960, 344950, 551920, 689900, 862375, 1379800, 1724750, 2759600, 3449500, 4311875, 6899000, 8623750, 13798000, 17247500, 34495000, 68990000]

約数ペア:

[(1, 68990000), (2, 34495000), (4, 17247500), (5, 13798000), (8, 8623750), (10, 6899000), (16, 4311875), (20, 3449500), (25, 2759600), (40, 1724750), (50, 1379800), (80, 862375), (100, 689900), (125, 551920), (200, 344950), (250, 275960), (400, 172475), (500, 137980), (625, 110384), (1000, 68990), (1250, 55192), (2000, 34495), (2500, 27596), (5000, 13798), (6899, 10000)]