2019959600

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{49999}}^1$

素因数の和:50118

約数の個数: 60

約数和(自身を含む): 4901100000

約数和(自身を除く): 2881140400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 505, 808, 1010, 1616, 2020, 2525, 4040, 5050, 8080, 10100, 20200, 40400, 49999, 99998, 199996, 249995, 399992, 499990, 799984, 999980, 1249975, 1999960, 2499950, 3999920, 4999900, 5049899, 9999800, 10099798, 19999600, 20199596, 25249495, 40399192, 50498990, 80798384, 100997980, 126247475, 201995960, 252494950, 403991920, 504989900, 1009979800, 2019959600]

約数ペア:

[(1, 2019959600), (2, 1009979800), (4, 504989900), (5, 403991920), (8, 252494950), (10, 201995960), (16, 126247475), (20, 100997980), (25, 80798384), (40, 50498990), (50, 40399192), (80, 25249495), (100, 20199596), (101, 19999600), (200, 10099798), (202, 9999800), (400, 5049899), (404, 4999900), (505, 3999920), (808, 2499950), (1010, 1999960), (1616, 1249975), (2020, 999980), (2525, 799984), (4040, 499990), (5050, 399992), (8080, 249995), (10100, 199996), (20200, 99998), (40400, 49999)]