20664545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{1559}}^1$

素因数の和:1816

約数の個数: 16

約数和(自身を含む): 27181440

約数和(自身を除く): 6516895

約数列:

[1, 5, 11, 55, 241, 1205, 1559, 2651, 7795, 13255, 17149, 85745, 375719, 1878595, 4132909, 20664545]

約数ペア:

[(1, 20664545), (5, 4132909), (11, 1878595), (55, 375719), (241, 85745), (1205, 17149), (1559, 13255), (2651, 7795)]