21998459

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1\times {\mathrm{461}}^1$

素因数の和:886

約数の個数: 16

約数和(自身を含む): 26744256

約数和(自身を除く): 4745797

約数列:

[1, 7, 17, 119, 401, 461, 2807, 3227, 6817, 7837, 47719, 54859, 184861, 1294027, 3142637, 21998459]

約数ペア:

[(1, 21998459), (7, 3142637), (17, 1294027), (119, 184861), (401, 54859), (461, 47719), (2807, 7837), (3227, 6817)]