19856289

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2801}}^1$

素因数の和:2960

約数の個数: 16

約数和(自身を含む): 28244160

約数和(自身を除く): 8387871

約数列:

[1, 3, 17, 51, 139, 417, 2363, 2801, 7089, 8403, 47617, 142851, 389339, 1168017, 6618763, 19856289]

約数ペア:

[(1, 19856289), (3, 6618763), (17, 1168017), (51, 389339), (139, 142851), (417, 47617), (2363, 8403), (2801, 7089)]