1720720

素因数分解:

$2^4\times 5^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:307

約数の個数: 40

約数和(自身を含む): 4055544

約数和(自身を除く): 2334824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 137, 157, 274, 314, 548, 628, 685, 785, 1096, 1256, 1370, 1570, 2192, 2512, 2740, 3140, 5480, 6280, 10960, 12560, 21509, 43018, 86036, 107545, 172072, 215090, 344144, 430180, 860360, 1720720]

約数ペア:

[(1, 1720720), (2, 860360), (4, 430180), (5, 344144), (8, 215090), (10, 172072), (16, 107545), (20, 86036), (40, 43018), (80, 21509), (137, 12560), (157, 10960), (274, 6280), (314, 5480), (548, 3140), (628, 2740), (685, 2512), (785, 2192), (1096, 1570), (1256, 1370)]