20523879

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2531}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 31994352

約数和(自身を除く): 11470473

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2531, 2703, 7593, 8109, 22779, 43027, 129081, 134143, 387243, 402429, 1207287, 2280431, 6841293, 20523879]

約数ペア:

[(1, 20523879), (3, 6841293), (9, 2280431), (17, 1207287), (51, 402429), (53, 387243), (153, 134143), (159, 129081), (477, 43027), (901, 22779), (2531, 8109), (2703, 7593)]