20159600

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:618

約数の個数: 60

約数和(自身を含む): 49011000

約数和(自身を除く): 28851400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 499, 505, 808, 998, 1010, 1616, 1996, 2020, 2495, 2525, 3992, 4040, 4990, 5050, 7984, 8080, 9980, 10100, 12475, 19960, 20200, 24950, 39920, 40400, 49900, 50399, 99800, 100798, 199600, 201596, 251995, 403192, 503990, 806384, 1007980, 1259975, 2015960, 2519950, 4031920, 5039900, 10079800, 20159600]

約数ペア:

[(1, 20159600), (2, 10079800), (4, 5039900), (5, 4031920), (8, 2519950), (10, 2015960), (16, 1259975), (20, 1007980), (25, 806384), (40, 503990), (50, 403192), (80, 251995), (100, 201596), (101, 199600), (200, 100798), (202, 99800), (400, 50399), (404, 49900), (499, 40400), (505, 39920), (808, 24950), (998, 20200), (1010, 19960), (1616, 12475), (1996, 10100), (2020, 9980), (2495, 8080), (2525, 7984), (3992, 5050), (4040, 4990)]