21008050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{311}}^1$

素因数の和:523

約数の個数: 48

約数和(自身を含む): 45032832

約数和(自身を除く): 24024782

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 175, 193, 311, 350, 386, 622, 965, 1351, 1555, 1930, 2177, 2702, 3110, 4354, 4825, 6755, 7775, 9650, 10885, 13510, 15550, 21770, 33775, 54425, 60023, 67550, 108850, 120046, 300115, 420161, 600230, 840322, 1500575, 2100805, 3001150, 4201610, 10504025, 21008050]

約数ペア:

[(1, 21008050), (2, 10504025), (5, 4201610), (7, 3001150), (10, 2100805), (14, 1500575), (25, 840322), (35, 600230), (50, 420161), (70, 300115), (175, 120046), (193, 108850), (311, 67550), (350, 60023), (386, 54425), (622, 33775), (965, 21770), (1351, 15550), (1555, 13510), (1930, 10885), (2177, 9650), (2702, 7775), (3110, 6755), (4354, 4825)]