20278291

素因数分解:

${\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 22998528

約数和(自身を除く): 2720237

約数列:

[1, 11, 47, 61, 517, 643, 671, 2867, 7073, 30221, 31537, 39223, 332431, 431453, 1843481, 20278291]

約数ペア:

[(1, 20278291), (11, 1843481), (47, 431453), (61, 332431), (517, 39223), (643, 31537), (671, 30221), (2867, 7073)]