1998238

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1489}}^1$

素因数の和:1563

約数の個数: 16

約数和(自身を含む): 3325680

約数和(自身を除く): 1327442

約数列:

[1, 2, 11, 22, 61, 122, 671, 1342, 1489, 2978, 16379, 32758, 90829, 181658, 999119, 1998238]

約数ペア:

[(1, 1998238), (2, 999119), (11, 181658), (22, 90829), (61, 32758), (122, 16379), (671, 2978), (1342, 1489)]