638515922

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1\times {\mathrm{1213}}^1$

素因数の和:1634

約数の個数: 32

約数和(自身を含む): 1063580544

約数和(自身を除く): 425064622

約数列:

[1, 2, 11, 22, 71, 142, 337, 674, 781, 1213, 1562, 2426, 3707, 7414, 13343, 23927, 26686, 47854, 86123, 172246, 263197, 408781, 526394, 817562, 947353, 1894706, 4496591, 8993182, 29023451, 58046902, 319257961, 638515922]

約数ペア:

[(1, 638515922), (2, 319257961), (11, 58046902), (22, 29023451), (71, 8993182), (142, 4496591), (337, 1894706), (674, 947353), (781, 817562), (1213, 526394), (1562, 408781), (2426, 263197), (3707, 172246), (7414, 86123), (13343, 47854), (23927, 26686)]