18969730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{433}}^1$

素因数の和:790

約数の個数: 32

約数和(自身を含む): 36966384

約数和(自身を除く): 17996654

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 337, 433, 674, 866, 1685, 2165, 3370, 4330, 4381, 5629, 8762, 11258, 21905, 28145, 43810, 56290, 145921, 291842, 729605, 1459210, 1896973, 3793946, 9484865, 18969730]

約数ペア:

[(1, 18969730), (2, 9484865), (5, 3793946), (10, 1896973), (13, 1459210), (26, 729605), (65, 291842), (130, 145921), (337, 56290), (433, 43810), (674, 28145), (866, 21905), (1685, 11258), (2165, 8762), (3370, 5629), (4330, 4381)]