19913872

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113147}}^1$

素因数の和:113166

約数の個数: 20

約数和(自身を含む): 42091056

約数和(自身を除く): 22177184

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 113147, 226294, 452588, 905176, 1244617, 1810352, 2489234, 4978468, 9956936, 19913872]

約数ペア:

[(1, 19913872), (2, 9956936), (4, 4978468), (8, 2489234), (11, 1810352), (16, 1244617), (22, 905176), (44, 452588), (88, 226294), (176, 113147)]