20983457

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{101}}^2$

素因数の和:241

約数の個数: 18

約数和(自身を含む): 24665382

約数和(自身を除く): 3681925

約数列:

[1, 11, 17, 101, 121, 187, 1111, 1717, 2057, 10201, 12221, 18887, 112211, 173417, 207757, 1234321, 1907587, 20983457]

約数ペア:

[(1, 20983457), (11, 1907587), (17, 1234321), (101, 207757), (121, 173417), (187, 112211), (1111, 18887), (1717, 12221), (2057, 10201)]