661339560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{787309}}^1$

素因数の和:787330

約数の個数: 64

約数和(自身を含む): 2267452800

約数和(自身を除く): 1606113240

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, 787309, 1574618, 2361927, 3149236, 3936545, 4723854, 5511163, 6298472, 7873090, 9447708, 11022326, 11809635, 15746180, 16533489, 18895416, 22044652, 23619270, 27555815, 31492360, 33066978, 44089304, 47238540, 55111630, 66133956, 82667445, 94477080, 110223260, 132267912, 165334890, 220446520, 330669780, 661339560]

約数ペア:

[(1, 661339560), (2, 330669780), (3, 220446520), (4, 165334890), (5, 132267912), (6, 110223260), (7, 94477080), (8, 82667445), (10, 66133956), (12, 55111630), (14, 47238540), (15, 44089304), (20, 33066978), (21, 31492360), (24, 27555815), (28, 23619270), (30, 22044652), (35, 18895416), (40, 16533489), (42, 15746180), (56, 11809635), (60, 11022326), (70, 9447708), (84, 7873090), (105, 6298472), (120, 5511163), (140, 4723854), (168, 3936545), (210, 3149236), (280, 2361927), (420, 1574618), (840, 787309)]