21918171

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{619}}^1$

素因数の和:699

約数の個数: 32

約数和(自身を含む): 33926400

約数和(自身を除く): 12008229

約数列:

[1, 3, 11, 29, 33, 37, 87, 111, 319, 407, 619, 957, 1073, 1221, 1857, 3219, 6809, 11803, 17951, 20427, 22903, 35409, 53853, 68709, 197461, 251933, 592383, 664187, 755799, 1992561, 7306057, 21918171]

約数ペア:

[(1, 21918171), (3, 7306057), (11, 1992561), (29, 755799), (33, 664187), (37, 592383), (87, 251933), (111, 197461), (319, 68709), (407, 53853), (619, 35409), (957, 22903), (1073, 20427), (1221, 17951), (1857, 11803), (3219, 6809)]