1680451409

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{971921}}^1$

素因数の和:971960

約数の個数: 16

約数和(自身を含む): 2177105280

約数和(自身を除く): 496653871

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 971921, 6803447, 12634973, 18466499, 88444811, 129265493, 240064487, 1680451409]

約数ペア:

[(1, 1680451409), (7, 240064487), (13, 129265493), (19, 88444811), (91, 18466499), (133, 12634973), (247, 6803447), (1729, 971921)]