20409823

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 25116480

約数和(自身を除く): 4706657

約数列:

[1, 7, 29, 49, 53, 203, 271, 371, 1421, 1537, 1897, 2597, 7859, 10759, 13279, 14363, 55013, 75313, 100541, 385091, 416527, 703787, 2915689, 20409823]

約数ペア:

[(1, 20409823), (7, 2915689), (29, 703787), (49, 416527), (53, 385091), (203, 100541), (271, 75313), (371, 55013), (1421, 14363), (1537, 13279), (1897, 10759), (2597, 7859)]