207907721

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{1361}}^1$

素因数の和:1664

約数の個数: 16

約数和(自身を含む): 241019520

約数和(自身を除く): 33111799

約数列:

[1, 7, 139, 157, 973, 1099, 1361, 9527, 21823, 152761, 189179, 213677, 1324253, 1495739, 29701103, 207907721]

約数ペア:

[(1, 207907721), (7, 29701103), (139, 1495739), (157, 1324253), (973, 213677), (1099, 189179), (1361, 152761), (9527, 21823)]