12860000

素因数分解:

$2^5\times 5^4\times {\mathrm{643}}^1$

素因数の和:673

約数の個数: 60

約数和(自身を含む): 31686732

約数和(自身を除く): 18826732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 643, 800, 1000, 1250, 1286, 2000, 2500, 2572, 3215, 4000, 5000, 5144, 6430, 10000, 10288, 12860, 16075, 20000, 20576, 25720, 32150, 51440, 64300, 80375, 102880, 128600, 160750, 257200, 321500, 401875, 514400, 643000, 803750, 1286000, 1607500, 2572000, 3215000, 6430000, 12860000]

約数ペア:

[(1, 12860000), (2, 6430000), (4, 3215000), (5, 2572000), (8, 1607500), (10, 1286000), (16, 803750), (20, 643000), (25, 514400), (32, 401875), (40, 321500), (50, 257200), (80, 160750), (100, 128600), (125, 102880), (160, 80375), (200, 64300), (250, 51440), (400, 32150), (500, 25720), (625, 20576), (643, 20000), (800, 16075), (1000, 12860), (1250, 10288), (1286, 10000), (2000, 6430), (2500, 5144), (2572, 5000), (3215, 4000)]