21350623

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:140

約数の個数: 36

約数和(自身を含む): 28145232

約数和(自身を除く): 6794609

約数列:

[1, 7, 17, 19, 49, 71, 119, 133, 323, 361, 497, 833, 931, 1207, 1349, 2261, 2527, 3479, 6137, 8449, 9443, 15827, 17689, 22933, 25631, 42959, 59143, 66101, 160531, 179417, 300713, 435727, 1123717, 1255919, 3050089, 21350623]

約数ペア:

[(1, 21350623), (7, 3050089), (17, 1255919), (19, 1123717), (49, 435727), (71, 300713), (119, 179417), (133, 160531), (323, 66101), (361, 59143), (497, 42959), (833, 25631), (931, 22933), (1207, 17689), (1349, 15827), (2261, 9443), (2527, 8449), (3479, 6137)]