21619997

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1061}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 25691904

約数和(自身を除く): 4071907

約数列:

[1, 7, 41, 71, 287, 497, 1061, 2911, 7427, 20377, 43501, 75331, 304507, 527317, 3088571, 21619997]

約数ペア:

[(1, 21619997), (7, 3088571), (41, 527317), (71, 304507), (287, 75331), (497, 43501), (1061, 20377), (2911, 7427)]