205341040

素因数分解:

$2^4\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{1979}}^1$

素因数の和:3289

約数の個数: 40

約数和(自身を含む): 478027440

約数和(自身を除く): 272686400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1297, 1979, 2594, 3958, 5188, 6485, 7916, 9895, 10376, 12970, 15832, 19790, 20752, 25940, 31664, 39580, 51880, 79160, 103760, 158320, 2566763, 5133526, 10267052, 12833815, 20534104, 25667630, 41068208, 51335260, 102670520, 205341040]

約数ペア:

[(1, 205341040), (2, 102670520), (4, 51335260), (5, 41068208), (8, 25667630), (10, 20534104), (16, 12833815), (20, 10267052), (40, 5133526), (80, 2566763), (1297, 158320), (1979, 103760), (2594, 79160), (3958, 51880), (5188, 39580), (6485, 31664), (7916, 25940), (9895, 20752), (10376, 19790), (12970, 15832)]