21378172

素因数分解:

$2^2\times {\mathrm{107}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16724228

約数列:

[1, 2, 4, 107, 199, 214, 251, 398, 428, 502, 796, 1004, 21293, 26857, 42586, 49949, 53714, 85172, 99898, 107428, 199796, 5344543, 10689086, 21378172]

約数ペア:

[(1, 21378172), (2, 10689086), (4, 5344543), (107, 199796), (199, 107428), (214, 99898), (251, 85172), (398, 53714), (428, 49949), (502, 42586), (796, 26857), (1004, 21293)]