20139543

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 33156000

約数和(自身を除く): 13016457

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 89, 153, 261, 267, 289, 459, 493, 783, 801, 867, 1479, 1513, 2403, 2581, 2601, 4437, 4539, 7743, 7803, 8381, 13311, 13617, 23229, 25143, 25721, 40851, 43877, 69687, 75429, 77163, 131631, 226287, 231489, 394893, 694467, 745909, 1184679, 2237727, 6713181, 20139543]

約数ペア:

[(1, 20139543), (3, 6713181), (9, 2237727), (17, 1184679), (27, 745909), (29, 694467), (51, 394893), (87, 231489), (89, 226287), (153, 131631), (261, 77163), (267, 75429), (289, 69687), (459, 43877), (493, 40851), (783, 25721), (801, 25143), (867, 23229), (1479, 13617), (1513, 13311), (2403, 8381), (2581, 7803), (2601, 7743), (4437, 4539)]