20156297

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:261

約数の個数: 24

約数和(自身を含む): 24514560

約数和(自身を除く): 4358263

約数列:

[1, 7, 41, 49, 79, 127, 287, 553, 889, 2009, 3239, 3871, 5207, 6223, 10033, 22673, 36449, 70231, 158711, 255143, 411353, 491617, 2879471, 20156297]

約数ペア:

[(1, 20156297), (7, 2879471), (41, 491617), (49, 411353), (79, 255143), (127, 158711), (287, 70231), (553, 36449), (889, 22673), (2009, 10033), (3239, 6223), (3871, 5207)]