16720431

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{839}}^1$

素因数の和:935

約数の個数: 32

約数和(自身を含む): 27847680

約数和(自身を除く): 11127249

約数列:

[1, 3, 7, 13, 21, 39, 73, 91, 219, 273, 511, 839, 949, 1533, 2517, 2847, 5873, 6643, 10907, 17619, 19929, 32721, 61247, 76349, 183741, 229047, 428729, 796211, 1286187, 2388633, 5573477, 16720431]

約数ペア:

[(1, 16720431), (3, 5573477), (7, 2388633), (13, 1286187), (21, 796211), (39, 428729), (73, 229047), (91, 183741), (219, 76349), (273, 61247), (511, 32721), (839, 19929), (949, 17619), (1533, 10907), (2517, 6643), (2847, 5873)]