21917487

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{2393}}^1$

素因数の和:2510

約数の個数: 16

約数和(自身を含む): 30336768

約数和(自身を除く): 8419281

約数列:

[1, 3, 43, 71, 129, 213, 2393, 3053, 7179, 9159, 102899, 169903, 308697, 509709, 7305829, 21917487]

約数ペア:

[(1, 21917487), (3, 7305829), (43, 509709), (71, 308697), (129, 169903), (213, 102899), (2393, 9159), (3053, 7179)]