18721994

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{7873}}^1$

素因数の和:7945

約数の個数: 16

約数和(自身を含む): 29763720

約数和(自身を除く): 11041726

約数列:

[1, 2, 29, 41, 58, 82, 1189, 2378, 7873, 15746, 228317, 322793, 456634, 645586, 9360997, 18721994]

約数ペア:

[(1, 18721994), (2, 9360997), (29, 645586), (41, 456634), (58, 322793), (82, 228317), (1189, 15746), (2378, 7873)]