20606560

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9907}}^1$

素因数の和:9935

約数の個数: 48

約数和(自身を含む): 52433136

約数和(自身を除く): 31826576

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9907, 19814, 39628, 49535, 79256, 99070, 128791, 158512, 198140, 257582, 317024, 396280, 515164, 643955, 792560, 1030328, 1287910, 1585120, 2060656, 2575820, 4121312, 5151640, 10303280, 20606560]

約数ペア:

[(1, 20606560), (2, 10303280), (4, 5151640), (5, 4121312), (8, 2575820), (10, 2060656), (13, 1585120), (16, 1287910), (20, 1030328), (26, 792560), (32, 643955), (40, 515164), (52, 396280), (65, 317024), (80, 257582), (104, 198140), (130, 158512), (160, 128791), (208, 99070), (260, 79256), (416, 49535), (520, 39628), (1040, 19814), (2080, 9907)]