19971679

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{11551}}^1$

素因数の和:11590

約数の個数: 16

約数和(自身を含む): 25876480

約数和(自身を除く): 5904801

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 11551, 80857, 150163, 219469, 1051141, 1536283, 2853097, 19971679]

約数ペア:

[(1, 19971679), (7, 2853097), (13, 1536283), (19, 1051141), (91, 219469), (133, 150163), (247, 80857), (1729, 11551)]