20727369

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{613}}^1$

素因数の和:666

約数の個数: 36

約数和(自身を含む): 34306636

約数和(自身を除く): 13579267

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 289, 613, 663, 867, 1839, 1989, 2601, 3757, 5517, 7969, 10421, 11271, 23907, 31263, 33813, 71721, 93789, 135473, 177157, 406419, 531471, 1219257, 1594413, 2303041, 6909123, 20727369]

約数ペア:

[(1, 20727369), (3, 6909123), (9, 2303041), (13, 1594413), (17, 1219257), (39, 531471), (51, 406419), (117, 177157), (153, 135473), (221, 93789), (289, 71721), (613, 33813), (663, 31263), (867, 23907), (1839, 11271), (1989, 10421), (2601, 7969), (3757, 5517)]