20658519

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19289}}^1$

素因数の和:19319

約数の個数: 24

約数和(自身を含む): 36110880

約数和(自身を除く): 15452361

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19289, 57867, 135023, 173601, 327913, 405069, 983739, 1215207, 2295391, 2951217, 6886173, 20658519]

約数ペア:

[(1, 20658519), (3, 6886173), (7, 2951217), (9, 2295391), (17, 1215207), (21, 983739), (51, 405069), (63, 327913), (119, 173601), (153, 135023), (357, 57867), (1071, 19289)]