291216289

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{677}}^1$

素因数の和:889

約数の個数: 32

約数和(自身を含む): 373605120

約数和(自身を除く): 82388831

約数列:

[1, 7, 13, 29, 91, 163, 203, 377, 677, 1141, 2119, 2639, 4727, 4739, 8801, 14833, 19633, 33089, 61451, 61607, 110351, 137431, 255229, 430157, 772457, 1434563, 1786603, 3200179, 10041941, 22401253, 41602327, 291216289]

約数ペア:

[(1, 291216289), (7, 41602327), (13, 22401253), (29, 10041941), (91, 3200179), (163, 1786603), (203, 1434563), (377, 772457), (677, 430157), (1141, 255229), (2119, 137431), (2639, 110351), (4727, 61607), (4739, 61451), (8801, 33089), (14833, 19633)]