20489828

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{15859}}^1$

素因数の和:15899

約数の個数: 24

約数和(自身を含む): 39967200

約数和(自身を除く): 19477372

約数列:

[1, 2, 4, 17, 19, 34, 38, 68, 76, 323, 646, 1292, 15859, 31718, 63436, 269603, 301321, 539206, 602642, 1078412, 1205284, 5122457, 10244914, 20489828]

約数ペア:

[(1, 20489828), (2, 10244914), (4, 5122457), (17, 1205284), (19, 1078412), (34, 602642), (38, 539206), (68, 301321), (76, 269603), (323, 63436), (646, 31718), (1292, 15859)]