20443840

素因数分解:

$2^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2203}}^1$

素因数の和:2249

約数の個数: 56

約数和(自身を含む): 50383440

約数和(自身を除く): 29939600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 64, 80, 116, 145, 160, 232, 290, 320, 464, 580, 928, 1160, 1856, 2203, 2320, 4406, 4640, 8812, 9280, 11015, 17624, 22030, 35248, 44060, 63887, 70496, 88120, 127774, 140992, 176240, 255548, 319435, 352480, 511096, 638870, 704960, 1022192, 1277740, 2044384, 2555480, 4088768, 5110960, 10221920, 20443840]

約数ペア:

[(1, 20443840), (2, 10221920), (4, 5110960), (5, 4088768), (8, 2555480), (10, 2044384), (16, 1277740), (20, 1022192), (29, 704960), (32, 638870), (40, 511096), (58, 352480), (64, 319435), (80, 255548), (116, 176240), (145, 140992), (160, 127774), (232, 88120), (290, 70496), (320, 63887), (464, 44060), (580, 35248), (928, 22030), (1160, 17624), (1856, 11015), (2203, 9280), (2320, 8812), (4406, 4640)]