21480207

素因数分解:

$3^1\times 7^1\times {\mathrm{941}}^1\times {\mathrm{1087}}^1$

素因数の和:2038

約数の個数: 16

約数和(自身を含む): 32796672

約数和(自身を除く): 11316465

約数列:

[1, 3, 7, 21, 941, 1087, 2823, 3261, 6587, 7609, 19761, 22827, 1022867, 3068601, 7160069, 21480207]

約数ペア:

[(1, 21480207), (3, 7160069), (7, 3068601), (21, 1022867), (941, 22827), (1087, 19761), (2823, 7609), (3261, 6587)]