6430000

素因数分解:

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

素因数の和:671

約数の個数: 50

約数和(自身を含む): 15591884

約数和(自身を除く): 9161884

約数列:

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

約数ペア:

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