217434721

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{787}}^1\times {\mathrm{1361}}^1$

素因数の和:2184

約数の個数: 16

約数和(自身を含む): 257581440

約数和(自身を除く): 40146719

約数列:

[1, 7, 29, 203, 787, 1361, 5509, 9527, 22823, 39469, 159761, 276283, 1071107, 7497749, 31062103, 217434721]

約数ペア:

[(1, 217434721), (7, 31062103), (29, 7497749), (203, 1071107), (787, 276283), (1361, 159761), (5509, 39469), (9527, 22823)]