28296681

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{70919}}^1$

素因数の和:70948

約数の個数: 16

約数和(自身を含む): 45388800

約数和(自身を除く): 17092119

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 70919, 212757, 496433, 1347461, 1489299, 4042383, 9432227, 28296681]

約数ペア:

[(1, 28296681), (3, 9432227), (7, 4042383), (19, 1489299), (21, 1347461), (57, 496433), (133, 212757), (399, 70919)]