20447021

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3271}}^1$

素因数の和:3344

約数の個数: 16

約数和(自身を含む): 25128960

約数和(自身を除く): 4681939

約数列:

[1, 7, 19, 47, 133, 329, 893, 3271, 6251, 22897, 62149, 153737, 435043, 1076159, 2921003, 20447021]

約数ペア:

[(1, 20447021), (7, 2921003), (19, 1076159), (47, 435043), (133, 153737), (329, 62149), (893, 22897), (3271, 6251)]