18139600

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{449}}^1$

素因数の和:568

約数の個数: 60

約数和(自身を含む): 44109900

約数和(自身を除く): 25970300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 449, 505, 808, 898, 1010, 1616, 1796, 2020, 2245, 2525, 3592, 4040, 4490, 5050, 7184, 8080, 8980, 10100, 11225, 17960, 20200, 22450, 35920, 40400, 44900, 45349, 89800, 90698, 179600, 181396, 226745, 362792, 453490, 725584, 906980, 1133725, 1813960, 2267450, 3627920, 4534900, 9069800, 18139600]

約数ペア:

[(1, 18139600), (2, 9069800), (4, 4534900), (5, 3627920), (8, 2267450), (10, 1813960), (16, 1133725), (20, 906980), (25, 725584), (40, 453490), (50, 362792), (80, 226745), (100, 181396), (101, 179600), (200, 90698), (202, 89800), (400, 45349), (404, 44900), (449, 40400), (505, 35920), (808, 22450), (898, 20200), (1010, 17960), (1616, 11225), (1796, 10100), (2020, 8980), (2245, 8080), (2525, 7184), (3592, 5050), (4040, 4490)]