278795020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{10007}}^1$

素因数の和:10222

約数の個数: 48

約数和(自身を含む): 672537600

約数和(自身を除く): 393742580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 796, 995, 1393, 1990, 2786, 3980, 5572, 6965, 10007, 13930, 20014, 27860, 40028, 50035, 70049, 100070, 140098, 200140, 280196, 350245, 700490, 1400980, 1991393, 3982786, 7965572, 9956965, 13939751, 19913930, 27879502, 39827860, 55759004, 69698755, 139397510, 278795020]

約数ペア:

[(1, 278795020), (2, 139397510), (4, 69698755), (5, 55759004), (7, 39827860), (10, 27879502), (14, 19913930), (20, 13939751), (28, 9956965), (35, 7965572), (70, 3982786), (140, 1991393), (199, 1400980), (398, 700490), (796, 350245), (995, 280196), (1393, 200140), (1990, 140098), (2786, 100070), (3980, 70049), (5572, 50035), (6965, 40028), (10007, 27860), (13930, 20014)]