18496751

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 24245760

約数和(自身を除く): 5749009

約数列:

[1, 7, 13, 29, 43, 91, 163, 203, 301, 377, 559, 1141, 1247, 2119, 2639, 3913, 4727, 7009, 8729, 14833, 16211, 33089, 49063, 61451, 91117, 113477, 203261, 430157, 637819, 1422827, 2642393, 18496751]

約数ペア:

[(1, 18496751), (7, 2642393), (13, 1422827), (29, 637819), (43, 430157), (91, 203261), (163, 113477), (203, 91117), (301, 61451), (377, 49063), (559, 33089), (1141, 16211), (1247, 14833), (2119, 8729), (2639, 7009), (3913, 4727)]