20278315000

素因数分解:

$2^3\times 5^4\times {\mathrm{1789}}^1\times {\mathrm{2267}}^1$

素因数の和:4082

約数の個数: 80

約数和(自身を含む): 47559619800

約数和(自身を除く): 27281304800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1789, 2267, 2500, 3578, 4534, 5000, 7156, 8945, 9068, 11335, 14312, 17890, 18136, 22670, 35780, 44725, 45340, 56675, 71560, 89450, 90680, 113350, 178900, 223625, 226700, 283375, 357800, 447250, 453400, 566750, 894500, 1118125, 1133500, 1416875, 1789000, 2236250, 2267000, 2833750, 4055663, 4472500, 5667500, 8111326, 8945000, 11335000, 16222652, 20278315, 32445304, 40556630, 81113260, 101391575, 162226520, 202783150, 405566300, 506957875, 811132600, 1013915750, 2027831500, 2534789375, 4055663000, 5069578750, 10139157500, 20278315000]

約数ペア:

[(1, 20278315000), (2, 10139157500), (4, 5069578750), (5, 4055663000), (8, 2534789375), (10, 2027831500), (20, 1013915750), (25, 811132600), (40, 506957875), (50, 405566300), (100, 202783150), (125, 162226520), (200, 101391575), (250, 81113260), (500, 40556630), (625, 32445304), (1000, 20278315), (1250, 16222652), (1789, 11335000), (2267, 8945000), (2500, 8111326), (3578, 5667500), (4534, 4472500), (5000, 4055663), (7156, 2833750), (8945, 2267000), (9068, 2236250), (11335, 1789000), (14312, 1416875), (17890, 1133500), (18136, 1118125), (22670, 894500), (35780, 566750), (44725, 453400), (45340, 447250), (56675, 357800), (71560, 283375), (89450, 226700), (90680, 223625), (113350, 178900)]