3981520

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 9345384

約数和(自身を除く): 5363864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 317, 628, 634, 785, 1256, 1268, 1570, 1585, 2512, 2536, 3140, 3170, 5072, 6280, 6340, 12560, 12680, 25360, 49769, 99538, 199076, 248845, 398152, 497690, 796304, 995380, 1990760, 3981520]

約数ペア:

[(1, 3981520), (2, 1990760), (4, 995380), (5, 796304), (8, 497690), (10, 398152), (16, 248845), (20, 199076), (40, 99538), (80, 49769), (157, 25360), (314, 12680), (317, 12560), (628, 6340), (634, 6280), (785, 5072), (1256, 3170), (1268, 3140), (1570, 2536), (1585, 2512)]