19982191

素因数分解:

${\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 21928320

約数和(自身を除く): 1946129

約数列:

[1, 17, 47, 89, 281, 799, 1513, 4183, 4777, 13207, 25009, 71111, 224519, 425153, 1175423, 19982191]

約数ペア:

[(1, 19982191), (17, 1175423), (47, 425153), (89, 224519), (281, 71111), (799, 25009), (1513, 13207), (4183, 4777)]