257539678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1\times {\mathrm{22469}}^1$

素因数の和:23003

約数の個数: 16

約数和(自身を含む): 422256240

約数和(自身を除く): 164716562

約数列:

[1, 2, 11, 22, 521, 1042, 5731, 11462, 22469, 44938, 247159, 494318, 11706349, 23412698, 128769839, 257539678]

約数ペア:

[(1, 257539678), (2, 128769839), (11, 23412698), (22, 11706349), (521, 494318), (1042, 247159), (5731, 44938), (11462, 22469)]