19888912

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{73121}}^1$

素因数の和:73146

約数の個数: 20

約数和(自身を含む): 40802076

約数和(自身を除く): 20913164

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 73121, 146242, 292484, 584968, 1169936, 1243057, 2486114, 4972228, 9944456, 19888912]

約数ペア:

[(1, 19888912), (2, 9944456), (4, 4972228), (8, 2486114), (16, 1243057), (17, 1169936), (34, 584968), (68, 292484), (136, 146242), (272, 73121)]