256118520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{304903}}^1$

素因数の和:304924

約数の個数: 64

約数和(自身を含む): 878123520

約数和(自身を除く): 622005000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 304903, 609806, 914709, 1219612, 1524515, 1829418, 2134321, 2439224, 3049030, 3658836, 4268642, 4573545, 6098060, 6402963, 7317672, 8537284, 9147090, 10671605, 12196120, 12805926, 17074568, 18294180, 21343210, 25611852, 32014815, 36588360, 42686420, 51223704, 64029630, 85372840, 128059260, 256118520]

約数ペア:

[(1, 256118520), (2, 128059260), (3, 85372840), (4, 64029630), (5, 51223704), (6, 42686420), (7, 36588360), (8, 32014815), (10, 25611852), (12, 21343210), (14, 18294180), (15, 17074568), (20, 12805926), (21, 12196120), (24, 10671605), (28, 9147090), (30, 8537284), (35, 7317672), (40, 6402963), (42, 6098060), (56, 4573545), (60, 4268642), (70, 3658836), (84, 3049030), (105, 2439224), (120, 2134321), (140, 1829418), (168, 1524515), (210, 1219612), (280, 914709), (420, 609806), (840, 304903)]