254411920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{64901}}^1$

素因数の和:64928

約数の個数: 60

約数和(自身を含む): 688091004

約数和(自身を除く): 433679084

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 64901, 129802, 259604, 324505, 454307, 519208, 649010, 908614, 1038416, 1298020, 1817228, 2271535, 2596040, 3180149, 3634456, 4543070, 5192080, 6360298, 7268912, 9086140, 12720596, 15900745, 18172280, 25441192, 31801490, 36344560, 50882384, 63602980, 127205960, 254411920]

約数ペア:

[(1, 254411920), (2, 127205960), (4, 63602980), (5, 50882384), (7, 36344560), (8, 31801490), (10, 25441192), (14, 18172280), (16, 15900745), (20, 12720596), (28, 9086140), (35, 7268912), (40, 6360298), (49, 5192080), (56, 4543070), (70, 3634456), (80, 3180149), (98, 2596040), (112, 2271535), (140, 1817228), (196, 1298020), (245, 1038416), (280, 908614), (392, 649010), (490, 519208), (560, 454307), (784, 324505), (980, 259604), (1960, 129802), (3920, 64901)]