128558000

素因数分解:

$2^4\times 5^3\times {\mathrm{64279}}^1$

素因数の和:64302

約数の個数: 40

約数和(自身を含む): 310858080

約数和(自身を除く): 182300080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 64279, 128558, 257116, 321395, 514232, 642790, 1028464, 1285580, 1606975, 2571160, 3213950, 5142320, 6427900, 8034875, 12855800, 16069750, 25711600, 32139500, 64279000, 128558000]

約数ペア:

[(1, 128558000), (2, 64279000), (4, 32139500), (5, 25711600), (8, 16069750), (10, 12855800), (16, 8034875), (20, 6427900), (25, 5142320), (40, 3213950), (50, 2571160), (80, 1606975), (100, 1285580), (125, 1028464), (200, 642790), (250, 514232), (400, 321395), (500, 257116), (1000, 128558), (2000, 64279)]