21217207

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1367}}^1$

素因数の和:1478

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 3603785

約数列:

[1, 11, 17, 83, 187, 913, 1367, 1411, 15037, 15521, 23239, 113461, 255629, 1248071, 1928837, 21217207]

約数ペア:

[(1, 21217207), (11, 1928837), (17, 1248071), (83, 255629), (187, 113461), (913, 23239), (1367, 15521), (1411, 15037)]