78411985

素因数分解:

$5^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:840

約数の個数: 16

約数和(自身を含む): 95356800

約数和(自身を除く): 16944815

約数列:

[1, 5, 139, 257, 439, 695, 1285, 2195, 35723, 61021, 112823, 178615, 305105, 564115, 15682397, 78411985]

約数ペア:

[(1, 78411985), (5, 15682397), (139, 564115), (257, 305105), (439, 178615), (695, 112823), (1285, 61021), (2195, 35723)]