19900160

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2221}}^1$

素因数の和:2249

約数の個数: 72

約数和(自身を含む): 54501216

約数和(自身を除く): 34601056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2221, 2240, 4442, 4480, 8884, 8960, 11105, 15547, 17768, 22210, 31094, 35536, 44420, 62188, 71072, 77735, 88840, 124376, 142144, 155470, 177680, 248752, 284288, 310940, 355360, 497504, 568576, 621880, 710720, 995008, 1243760, 1421440, 1990016, 2487520, 2842880, 3980032, 4975040, 9950080, 19900160]

約数ペア:

[(1, 19900160), (2, 9950080), (4, 4975040), (5, 3980032), (7, 2842880), (8, 2487520), (10, 1990016), (14, 1421440), (16, 1243760), (20, 995008), (28, 710720), (32, 621880), (35, 568576), (40, 497504), (56, 355360), (64, 310940), (70, 284288), (80, 248752), (112, 177680), (128, 155470), (140, 142144), (160, 124376), (224, 88840), (256, 77735), (280, 71072), (320, 62188), (448, 44420), (560, 35536), (640, 31094), (896, 22210), (1120, 17768), (1280, 15547), (1792, 11105), (2221, 8960), (2240, 8884), (4442, 4480)]