19898318

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12739}}^1$

素因数の和:12823

約数の個数: 16

約数和(自身を含む): 33022080

約数和(自身を除く): 13123762

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12739, 25478, 140129, 280258, 904469, 1808938, 9949159, 19898318]

約数ペア:

[(1, 19898318), (2, 9949159), (11, 1808938), (22, 904469), (71, 280258), (142, 140129), (781, 25478), (1562, 12739)]