21992202001

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{26861}}^1$

素因数の和:26931

約数の個数: 40

約数和(自身を含む): 28892337408

約数和(自身を除く): 6900135407

約数列:

[1, 7, 11, 31, 49, 77, 217, 341, 343, 539, 1519, 2387, 2401, 3773, 10633, 16709, 26411, 26861, 74431, 116963, 188027, 295471, 818741, 832691, 1316189, 2068297, 5828837, 9159601, 9213323, 14478079, 40801859, 64117207, 64493261, 101346553, 285613013, 448820449, 709425871, 1999291091, 3141743143, 21992202001]

約数ペア:

[(1, 21992202001), (7, 3141743143), (11, 1999291091), (31, 709425871), (49, 448820449), (77, 285613013), (217, 101346553), (341, 64493261), (343, 64117207), (539, 40801859), (1519, 14478079), (2387, 9213323), (2401, 9159601), (3773, 5828837), (10633, 2068297), (16709, 1316189), (26411, 832691), (26861, 818741), (74431, 295471), (116963, 188027)]