19771357

素因数分解:

${\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^2$

素因数の和:157

約数の個数: 18

約数和(自身を含む): 22083738

約数和(自身を除く): 2312381

約数列:

[1, 17, 37, 43, 289, 629, 731, 1591, 1849, 10693, 12427, 27047, 31433, 68413, 459799, 534361, 1163021, 19771357]

約数ペア:

[(1, 19771357), (17, 1163021), (37, 534361), (43, 459799), (289, 68413), (629, 31433), (731, 27047), (1591, 12427), (1849, 10693)]