18869389

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 24837120

約数和(自身を除く): 5967731

約数列:

[1, 7, 11, 41, 43, 77, 139, 287, 301, 451, 473, 973, 1529, 1763, 3157, 3311, 5699, 5977, 10703, 12341, 19393, 39893, 41839, 62689, 65747, 135751, 245057, 438823, 460229, 1715399, 2695627, 18869389]

約数ペア:

[(1, 18869389), (7, 2695627), (11, 1715399), (41, 460229), (43, 438823), (77, 245057), (139, 135751), (287, 65747), (301, 62689), (451, 41839), (473, 39893), (973, 19393), (1529, 12341), (1763, 10703), (3157, 5977), (3311, 5699)]