21305992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140171}}^1$

素因数の和:140196

約数の個数: 16

約数和(自身を含む): 42051600

約数和(自身を除く): 20745608

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140171, 280342, 560684, 1121368, 2663249, 5326498, 10652996, 21305992]

約数ペア:

[(1, 21305992), (2, 10652996), (4, 5326498), (8, 2663249), (19, 1121368), (38, 560684), (76, 280342), (152, 140171)]