257069516

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{21559}}^1$

素因数の和:21845

約数の個数: 24

約数和(自身を含む): 492602880

約数和(自身を除く): 235533364

約数列:

[1, 2, 4, 11, 22, 44, 271, 542, 1084, 2981, 5962, 11924, 21559, 43118, 86236, 237149, 474298, 948596, 5842489, 11684978, 23369956, 64267379, 128534758, 257069516]

約数ペア:

[(1, 257069516), (2, 128534758), (4, 64267379), (11, 23369956), (22, 11684978), (44, 5842489), (271, 948596), (542, 474298), (1084, 237149), (2981, 86236), (5962, 43118), (11924, 21559)]