20398651

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1033}}^1$

素因数の和:1091

約数の個数: 24

約数和(自身を含む): 26404224

約数和(自身を除く): 6005573

約数列:

[1, 7, 13, 31, 49, 91, 217, 403, 637, 1033, 1519, 2821, 7231, 13429, 19747, 32023, 50617, 94003, 224161, 416299, 658021, 1569127, 2914093, 20398651]

約数ペア:

[(1, 20398651), (7, 2914093), (13, 1569127), (31, 658021), (49, 416299), (91, 224161), (217, 94003), (403, 50617), (637, 32023), (1033, 19747), (1519, 13429), (2821, 7231)]