21109529

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3347}}^1$

素因数の和:3424

約数の個数: 16

約数和(自身を含む): 26034048

約数和(自身を除く): 4924519

約数列:

[1, 7, 17, 53, 119, 371, 901, 3347, 6307, 23429, 56899, 177391, 398293, 1241737, 3015647, 21109529]

約数ペア:

[(1, 21109529), (7, 3015647), (17, 1241737), (53, 398293), (119, 177391), (371, 56899), (901, 23429), (3347, 6307)]