21553864

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{65713}}^1$

素因数の和:65760

約数の個数: 16

約数和(自身を含む): 41399820

約数和(自身を除く): 19845956

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 65713, 131426, 262852, 525704, 2694233, 5388466, 10776932, 21553864]

約数ペア:

[(1, 21553864), (2, 10776932), (4, 5388466), (8, 2694233), (41, 525704), (82, 262852), (164, 131426), (328, 65713)]