20851978

素因数分解:

$2^1\times 7^1\times {\mathrm{827}}^1\times {\mathrm{1801}}^1$

素因数の和:2637

約数の個数: 16

約数和(自身を含む): 35809344

約数和(自身を除く): 14957366

約数列:

[1, 2, 7, 14, 827, 1654, 1801, 3602, 5789, 11578, 12607, 25214, 1489427, 2978854, 10425989, 20851978]

約数ペア:

[(1, 20851978), (2, 10425989), (7, 2978854), (14, 1489427), (827, 25214), (1654, 12607), (1801, 11578), (3602, 5789)]