209939715

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{5381}}^1$

素因数の和:5429

約数の個数: 48

約数和(自身を含む): 396545760

約数和(自身を除く): 186606045

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 289, 459, 765, 867, 1445, 2295, 2601, 4335, 5381, 7803, 13005, 16143, 26905, 39015, 48429, 80715, 91477, 145287, 242145, 274431, 457385, 726435, 823293, 1372155, 1555109, 2469879, 4116465, 4665327, 7775545, 12349395, 13995981, 23326635, 41987943, 69979905, 209939715]

約数ペア:

[(1, 209939715), (3, 69979905), (5, 41987943), (9, 23326635), (15, 13995981), (17, 12349395), (27, 7775545), (45, 4665327), (51, 4116465), (85, 2469879), (135, 1555109), (153, 1372155), (255, 823293), (289, 726435), (459, 457385), (765, 274431), (867, 242145), (1445, 145287), (2295, 91477), (2601, 80715), (4335, 48429), (5381, 39015), (7803, 26905), (13005, 16143)]