20665750

素因数分解:

$2^1\times 5^3\times 7^3\times {\mathrm{241}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 45302400

約数和(自身を除く): 24636650

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 125, 175, 241, 245, 250, 343, 350, 482, 490, 686, 875, 1205, 1225, 1687, 1715, 1750, 2410, 2450, 3374, 3430, 6025, 6125, 8435, 8575, 11809, 12050, 12250, 16870, 17150, 23618, 30125, 42175, 42875, 59045, 60250, 82663, 84350, 85750, 118090, 165326, 210875, 295225, 413315, 421750, 590450, 826630, 1476125, 2066575, 2952250, 4133150, 10332875, 20665750]

約数ペア:

[(1, 20665750), (2, 10332875), (5, 4133150), (7, 2952250), (10, 2066575), (14, 1476125), (25, 826630), (35, 590450), (49, 421750), (50, 413315), (70, 295225), (98, 210875), (125, 165326), (175, 118090), (241, 85750), (245, 84350), (250, 82663), (343, 60250), (350, 59045), (482, 42875), (490, 42175), (686, 30125), (875, 23618), (1205, 17150), (1225, 16870), (1687, 12250), (1715, 12050), (1750, 11809), (2410, 8575), (2450, 8435), (3374, 6125), (3430, 6025)]