21888400

素因数分解:

$2^4\times 5^2\times {\mathrm{54721}}^1$

素因数の和:54739

約数の個数: 30

約数和(自身を含む): 52587842

約数和(自身を除く): 30699442

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54721, 109442, 218884, 273605, 437768, 547210, 875536, 1094420, 1368025, 2188840, 2736050, 4377680, 5472100, 10944200, 21888400]

約数ペア:

[(1, 21888400), (2, 10944200), (4, 5472100), (5, 4377680), (8, 2736050), (10, 2188840), (16, 1368025), (20, 1094420), (25, 875536), (40, 547210), (50, 437768), (80, 273605), (100, 218884), (200, 109442), (400, 54721)]