27840449

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 8286271

約数列:

[1, 7, 13, 31, 71, 91, 139, 217, 403, 497, 923, 973, 1807, 2201, 2821, 4309, 6461, 9869, 12649, 15407, 28613, 30163, 56017, 69083, 128297, 200291, 305939, 392119, 898079, 2141573, 3977207, 27840449]

約数ペア:

[(1, 27840449), (7, 3977207), (13, 2141573), (31, 898079), (71, 392119), (91, 305939), (139, 200291), (217, 128297), (403, 69083), (497, 56017), (923, 30163), (973, 28613), (1807, 15407), (2201, 12649), (2821, 9869), (4309, 6461)]