28438400

素因数分解:

$2^7\times 5^2\times {\mathrm{8887}}^1$

素因数の和:8911

約数の個数: 48

約数和(自身を含む): 70259640

約数和(自身を除く): 41821240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 8887, 17774, 35548, 44435, 71096, 88870, 142192, 177740, 222175, 284384, 355480, 444350, 568768, 710960, 888700, 1137536, 1421920, 1777400, 2843840, 3554800, 5687680, 7109600, 14219200, 28438400]

約数ペア:

[(1, 28438400), (2, 14219200), (4, 7109600), (5, 5687680), (8, 3554800), (10, 2843840), (16, 1777400), (20, 1421920), (25, 1137536), (32, 888700), (40, 710960), (50, 568768), (64, 444350), (80, 355480), (100, 284384), (128, 222175), (160, 177740), (200, 142192), (320, 88870), (400, 71096), (640, 44435), (800, 35548), (1600, 17774), (3200, 8887)]