28120365

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:153

約数の個数: 120

約数和(自身を含む): 63728280

約数和(自身を除く): 35607915

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 49, 63, 65, 81, 91, 105, 109, 117, 135, 147, 189, 195, 245, 273, 315, 327, 351, 405, 441, 455, 545, 567, 585, 637, 735, 763, 819, 945, 981, 1053, 1323, 1365, 1417, 1635, 1755, 1911, 2205, 2289, 2457, 2835, 2943, 3185, 3815, 3969, 4095, 4251, 4905, 5265, 5341, 5733, 6615, 6867, 7085, 7371, 8829, 9555, 9919, 11445, 12285, 12753, 14715, 16023, 17199, 19845, 20601, 21255, 26705, 28665, 29757, 34335, 36855, 38259, 44145, 48069, 49595, 51597, 61803, 63765, 69433, 80115, 85995, 89271, 103005, 114777, 144207, 148785, 191295, 208299, 240345, 257985, 267813, 309015, 347165, 432621, 446355, 573885, 624897, 721035, 803439, 1041495, 1339065, 1874691, 2163105, 3124485, 4017195, 5624073, 9373455, 28120365]

約数ペア:

[(1, 28120365), (3, 9373455), (5, 5624073), (7, 4017195), (9, 3124485), (13, 2163105), (15, 1874691), (21, 1339065), (27, 1041495), (35, 803439), (39, 721035), (45, 624897), (49, 573885), (63, 446355), (65, 432621), (81, 347165), (91, 309015), (105, 267813), (109, 257985), (117, 240345), (135, 208299), (147, 191295), (189, 148785), (195, 144207), (245, 114777), (273, 103005), (315, 89271), (327, 85995), (351, 80115), (405, 69433), (441, 63765), (455, 61803), (545, 51597), (567, 49595), (585, 48069), (637, 44145), (735, 38259), (763, 36855), (819, 34335), (945, 29757), (981, 28665), (1053, 26705), (1323, 21255), (1365, 20601), (1417, 19845), (1635, 17199), (1755, 16023), (1911, 14715), (2205, 12753), (2289, 12285), (2457, 11445), (2835, 9919), (2943, 9555), (3185, 8829), (3815, 7371), (3969, 7085), (4095, 6867), (4251, 6615), (4905, 5733), (5265, 5341)]