21605306401

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{1559}}^1\times {\mathrm{14243}}^1$

素因数の和:15948

約数の個数: 16

約数和(自身を含む): 24887116800

約数和(自身を除く): 3281810399

約数列:

[1, 7, 139, 973, 1559, 10913, 14243, 99701, 216701, 1516907, 1979777, 13858439, 22204837, 155433859, 3086472343, 21605306401]

約数ペア:

[(1, 21605306401), (7, 3086472343), (139, 155433859), (973, 22204837), (1559, 13858439), (10913, 1979777), (14243, 1516907), (99701, 216701)]