205505580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{489299}}^1$

素因数の和:489318

約数の個数: 48

約数和(自身を含む): 657619200

約数和(自身を除く): 452113620

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, 489299, 978598, 1467897, 1957196, 2446495, 2935794, 3425093, 4892990, 5871588, 6850186, 7339485, 9785980, 10275279, 13700372, 14678970, 17125465, 20550558, 29357940, 34250930, 41101116, 51376395, 68501860, 102752790, 205505580]

約数ペア:

[(1, 205505580), (2, 102752790), (3, 68501860), (4, 51376395), (5, 41101116), (6, 34250930), (7, 29357940), (10, 20550558), (12, 17125465), (14, 14678970), (15, 13700372), (20, 10275279), (21, 9785980), (28, 7339485), (30, 6850186), (35, 5871588), (42, 4892990), (60, 3425093), (70, 2935794), (84, 2446495), (105, 1957196), (140, 1467897), (210, 978598), (420, 489299)]