20404305

素因数分解:

$3^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{607}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 37078272

約数和(自身を除く): 16673967

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 83, 135, 249, 405, 415, 607, 747, 1245, 1821, 2241, 3035, 3735, 5463, 6723, 9105, 11205, 16389, 27315, 33615, 49167, 50381, 81945, 151143, 245835, 251905, 453429, 755715, 1360287, 2267145, 4080861, 6801435, 20404305]

約数ペア:

[(1, 20404305), (3, 6801435), (5, 4080861), (9, 2267145), (15, 1360287), (27, 755715), (45, 453429), (81, 251905), (83, 245835), (135, 151143), (249, 81945), (405, 50381), (415, 49167), (607, 33615), (747, 27315), (1245, 16389), (1821, 11205), (2241, 9105), (3035, 6723), (3735, 5463)]