21449869

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:525

約数の個数: 24

約数和(自身を含む): 27232128

約数和(自身を除く): 5782259

約数列:

[1, 7, 17, 23, 119, 161, 289, 391, 461, 2023, 2737, 3227, 6647, 7837, 10603, 46529, 54859, 74221, 133229, 180251, 932603, 1261757, 3064267, 21449869]

約数ペア:

[(1, 21449869), (7, 3064267), (17, 1261757), (23, 932603), (119, 180251), (161, 133229), (289, 74221), (391, 54859), (461, 46529), (2023, 10603), (2737, 7837), (3227, 6647)]