19446280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 50400000

約数和(自身を除く): 30953720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 199, 280, 349, 398, 698, 796, 995, 1393, 1396, 1592, 1745, 1990, 2443, 2786, 2792, 3490, 3980, 4886, 5572, 6965, 6980, 7960, 9772, 11144, 12215, 13930, 13960, 19544, 24430, 27860, 48860, 55720, 69451, 97720, 138902, 277804, 347255, 486157, 555608, 694510, 972314, 1389020, 1944628, 2430785, 2778040, 3889256, 4861570, 9723140, 19446280]

約数ペア:

[(1, 19446280), (2, 9723140), (4, 4861570), (5, 3889256), (7, 2778040), (8, 2430785), (10, 1944628), (14, 1389020), (20, 972314), (28, 694510), (35, 555608), (40, 486157), (56, 347255), (70, 277804), (140, 138902), (199, 97720), (280, 69451), (349, 55720), (398, 48860), (698, 27860), (796, 24430), (995, 19544), (1393, 13960), (1396, 13930), (1592, 12215), (1745, 11144), (1990, 9772), (2443, 7960), (2786, 6980), (2792, 6965), (3490, 5572), (3980, 4886)]