20513901

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{739}}^1$

素因数の和:1248

約数の個数: 16

約数和(自身を含む): 28889600

約数和(自身を除く): 8375699

約数列:

[1, 3, 19, 57, 487, 739, 1461, 2217, 9253, 14041, 27759, 42123, 359893, 1079679, 6837967, 20513901]

約数ペア:

[(1, 20513901), (3, 6837967), (19, 1079679), (57, 359893), (487, 42123), (739, 27759), (1461, 14041), (2217, 9253)]