20616387

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:415

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11317053

約数列:

[1, 3, 11, 19, 33, 57, 131, 209, 251, 393, 627, 753, 1441, 2489, 2761, 4323, 4769, 7467, 8283, 14307, 27379, 32881, 52459, 82137, 98643, 157377, 361691, 624739, 1085073, 1874217, 6872129, 20616387]

約数ペア:

[(1, 20616387), (3, 6872129), (11, 1874217), (19, 1085073), (33, 624739), (57, 361691), (131, 157377), (209, 98643), (251, 82137), (393, 52459), (627, 32881), (753, 27379), (1441, 14307), (2489, 8283), (2761, 7467), (4323, 4769)]