20481440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18287}}^1$

素因数の和:18309

約数の個数: 48

約数和(自身を含む): 55302912

約数和(自身を除く): 34821472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18287, 36574, 73148, 91435, 128009, 146296, 182870, 256018, 292592, 365740, 512036, 585184, 640045, 731480, 1024072, 1280090, 1462960, 2048144, 2560180, 2925920, 4096288, 5120360, 10240720, 20481440]

約数ペア:

[(1, 20481440), (2, 10240720), (4, 5120360), (5, 4096288), (7, 2925920), (8, 2560180), (10, 2048144), (14, 1462960), (16, 1280090), (20, 1024072), (28, 731480), (32, 640045), (35, 585184), (40, 512036), (56, 365740), (70, 292592), (80, 256018), (112, 182870), (140, 146296), (160, 128009), (224, 91435), (280, 73148), (560, 36574), (1120, 18287)]