20477821

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{733}}^1$

素因数の和:1060

約数の個数: 16

約数和(自身を含む): 25320064

約数和(自身を除く): 4842243

約数列:

[1, 7, 13, 91, 307, 733, 2149, 3991, 5131, 9529, 27937, 66703, 225031, 1575217, 2925403, 20477821]

約数ペア:

[(1, 20477821), (7, 2925403), (13, 1575217), (91, 225031), (307, 66703), (733, 27937), (2149, 9529), (3991, 5131)]