20748133

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2137}}^1$

素因数の和:2236

約数の個数: 16

約数和(自身を含む): 25313920

約数和(自身を除く): 4565787

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2137, 9709, 14959, 40603, 156001, 284221, 1092007, 2964019, 20748133]

約数ペア:

[(1, 20748133), (7, 2964019), (19, 1092007), (73, 284221), (133, 156001), (511, 40603), (1387, 14959), (2137, 9709)]