2989441

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{19}}^2$

素因数の和:78

約数の個数: 27

約数和(自身を含む): 3974211

約数和(自身を除く): 984770

約数列:

[1, 7, 13, 19, 49, 91, 133, 169, 247, 361, 637, 931, 1183, 1729, 2527, 3211, 4693, 8281, 12103, 17689, 22477, 32851, 61009, 157339, 229957, 427063, 2989441]

約数ペア:

[(1, 2989441), (7, 427063), (13, 229957), (19, 157339), (49, 61009), (91, 32851), (133, 22477), (169, 17689), (247, 12103), (361, 8281), (637, 4693), (931, 3211), (1183, 2527)]