8820140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{251}}^2$

素因数の和:518

約数の個数: 36

約数和(自身を含む): 21253008

約数和(自身を除く): 12432868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 251, 502, 1004, 1255, 1757, 2510, 3514, 5020, 7028, 8785, 17570, 35140, 63001, 126002, 252004, 315005, 441007, 630010, 882014, 1260020, 1764028, 2205035, 4410070, 8820140]

約数ペア:

[(1, 8820140), (2, 4410070), (4, 2205035), (5, 1764028), (7, 1260020), (10, 882014), (14, 630010), (20, 441007), (28, 315005), (35, 252004), (70, 126002), (140, 63001), (251, 35140), (502, 17570), (1004, 8785), (1255, 7028), (1757, 5020), (2510, 3514)]