81557714

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{187921}}^1$

素因数の和:187961

約数の個数: 16

約数和(自身を含む): 144324096

約数和(自身を除く): 62766382

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 187921, 375842, 1315447, 2630894, 5825551, 11651102, 40778857, 81557714]

約数ペア:

[(1, 81557714), (2, 40778857), (7, 11651102), (14, 5825551), (31, 2630894), (62, 1315447), (217, 375842), (434, 187921)]