19980653

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{6329}}^1$

素因数の和:6388

約数の個数: 16

約数和(自身を含む): 25522560

約数和(自身を除く): 5541907

約数列:

[1, 7, 11, 41, 77, 287, 451, 3157, 6329, 44303, 69619, 259489, 487333, 1816423, 2854379, 19980653]

約数ペア:

[(1, 19980653), (7, 2854379), (11, 1816423), (41, 487333), (77, 259489), (287, 69619), (451, 44303), (3157, 6329)]