19985421

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{12641}}^1$

素因数の和:12692

約数の個数: 16

約数和(自身を含む): 29127168

約数和(自身を除く): 9141747

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 12641, 37923, 214897, 391871, 644691, 1175613, 6661807, 19985421]

約数ペア:

[(1, 19985421), (3, 6661807), (17, 1175613), (31, 644691), (51, 391871), (93, 214897), (527, 37923), (1581, 12641)]