20484280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26953}}^1$

素因数の和:26983

約数の個数: 32

約数和(自身を含む): 48517200

約数和(自身を除く): 28032920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 26953, 53906, 107812, 134765, 215624, 269530, 512107, 539060, 1024214, 1078120, 2048428, 2560535, 4096856, 5121070, 10242140, 20484280]

約数ペア:

[(1, 20484280), (2, 10242140), (4, 5121070), (5, 4096856), (8, 2560535), (10, 2048428), (19, 1078120), (20, 1024214), (38, 539060), (40, 512107), (76, 269530), (95, 215624), (152, 134765), (190, 107812), (380, 53906), (760, 26953)]