28428800

素因数分解:

$2^9\times 5^2\times {\mathrm{2221}}^1$

素因数の和:2249

約数の個数: 60

約数和(自身を含む): 70466286

約数和(自身を除く): 42037486

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1600, 2221, 2560, 3200, 4442, 6400, 8884, 11105, 12800, 17768, 22210, 35536, 44420, 55525, 71072, 88840, 111050, 142144, 177680, 222100, 284288, 355360, 444200, 568576, 710720, 888400, 1137152, 1421440, 1776800, 2842880, 3553600, 5685760, 7107200, 14214400, 28428800]

約数ペア:

[(1, 28428800), (2, 14214400), (4, 7107200), (5, 5685760), (8, 3553600), (10, 2842880), (16, 1776800), (20, 1421440), (25, 1137152), (32, 888400), (40, 710720), (50, 568576), (64, 444200), (80, 355360), (100, 284288), (128, 222100), (160, 177680), (200, 142144), (256, 111050), (320, 88840), (400, 71072), (512, 55525), (640, 44420), (800, 35536), (1280, 22210), (1600, 17768), (2221, 12800), (2560, 11105), (3200, 8884), (4442, 6400)]