251580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{599}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 806400

約数和(自身を除く): 554820

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 599, 1198, 1797, 2396, 2995, 3594, 4193, 5990, 7188, 8386, 8985, 11980, 12579, 16772, 17970, 20965, 25158, 35940, 41930, 50316, 62895, 83860, 125790, 251580]

約数ペア:

[(1, 251580), (2, 125790), (3, 83860), (4, 62895), (5, 50316), (6, 41930), (7, 35940), (10, 25158), (12, 20965), (14, 17970), (15, 16772), (20, 12579), (21, 11980), (28, 8985), (30, 8386), (35, 7188), (42, 5990), (60, 4193), (70, 3594), (84, 2995), (105, 2396), (140, 1797), (210, 1198), (420, 599)]