20281423360

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{720221}}^1$

素因数の和:720255

約数の個数: 80

約数和(自身を含む): 53048671632

約数和(自身を除く): 32767248272

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 512, 640, 704, 880, 1280, 1408, 1760, 2560, 2816, 3520, 5632, 7040, 14080, 28160, 720221, 1440442, 2880884, 3601105, 5761768, 7202210, 7922431, 11523536, 14404420, 15844862, 23047072, 28808840, 31689724, 39612155, 46094144, 57617680, 63379448, 79224310, 92188288, 115235360, 126758896, 158448620, 184376576, 230470720, 253517792, 316897240, 368753152, 460941440, 507035584, 633794480, 921882880, 1014071168, 1267588960, 1843765760, 2028142336, 2535177920, 4056284672, 5070355840, 10140711680, 20281423360]

約数ペア:

[(1, 20281423360), (2, 10140711680), (4, 5070355840), (5, 4056284672), (8, 2535177920), (10, 2028142336), (11, 1843765760), (16, 1267588960), (20, 1014071168), (22, 921882880), (32, 633794480), (40, 507035584), (44, 460941440), (55, 368753152), (64, 316897240), (80, 253517792), (88, 230470720), (110, 184376576), (128, 158448620), (160, 126758896), (176, 115235360), (220, 92188288), (256, 79224310), (320, 63379448), (352, 57617680), (440, 46094144), (512, 39612155), (640, 31689724), (704, 28808840), (880, 23047072), (1280, 15844862), (1408, 14404420), (1760, 11523536), (2560, 7922431), (2816, 7202210), (3520, 5761768), (5632, 3601105), (7040, 2880884), (14080, 1440442), (28160, 720221)]