217871920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{389057}}^1$

素因数の和:389077

約数の個数: 40

約数和(自身を含む): 578918304

約数和(自身を除く): 361046384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 389057, 778114, 1556228, 1945285, 2723399, 3112456, 3890570, 5446798, 6224912, 7781140, 10893596, 13616995, 15562280, 21787192, 27233990, 31124560, 43574384, 54467980, 108935960, 217871920]

約数ペア:

[(1, 217871920), (2, 108935960), (4, 54467980), (5, 43574384), (7, 31124560), (8, 27233990), (10, 21787192), (14, 15562280), (16, 13616995), (20, 10893596), (28, 7781140), (35, 6224912), (40, 5446798), (56, 3890570), (70, 3112456), (80, 2723399), (112, 1945285), (140, 1556228), (280, 778114), (560, 389057)]