8499820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{557}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 20623680

約数和(自身を除く): 12123860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 557, 763, 1090, 1114, 1526, 2180, 2228, 2785, 3052, 3815, 3899, 5570, 7630, 7798, 11140, 15260, 15596, 19495, 38990, 60713, 77980, 121426, 242852, 303565, 424991, 607130, 849982, 1214260, 1699964, 2124955, 4249910, 8499820]

約数ペア:

[(1, 8499820), (2, 4249910), (4, 2124955), (5, 1699964), (7, 1214260), (10, 849982), (14, 607130), (20, 424991), (28, 303565), (35, 242852), (70, 121426), (109, 77980), (140, 60713), (218, 38990), (436, 19495), (545, 15596), (557, 15260), (763, 11140), (1090, 7798), (1114, 7630), (1526, 5570), (2180, 3899), (2228, 3815), (2785, 3052)]