399733040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{787}}^1\times {\mathrm{907}}^1$

素因数の和:1714

約数の個数: 80

約数和(自身を含む): 1064669952

約数和(自身を除く): 664936912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 787, 907, 1574, 1814, 3148, 3628, 3935, 4535, 5509, 6296, 6349, 7256, 7870, 9070, 11018, 12592, 12698, 14512, 15740, 18140, 22036, 25396, 27545, 31480, 31745, 36280, 44072, 50792, 55090, 62960, 63490, 72560, 88144, 101584, 110180, 126980, 220360, 253960, 440720, 507920, 713809, 1427618, 2855236, 3569045, 4996663, 5710472, 7138090, 9993326, 11420944, 14276180, 19986652, 24983315, 28552360, 39973304, 49966630, 57104720, 79946608, 99933260, 199866520, 399733040]

約数ペア:

[(1, 399733040), (2, 199866520), (4, 99933260), (5, 79946608), (7, 57104720), (8, 49966630), (10, 39973304), (14, 28552360), (16, 24983315), (20, 19986652), (28, 14276180), (35, 11420944), (40, 9993326), (56, 7138090), (70, 5710472), (80, 4996663), (112, 3569045), (140, 2855236), (280, 1427618), (560, 713809), (787, 507920), (907, 440720), (1574, 253960), (1814, 220360), (3148, 126980), (3628, 110180), (3935, 101584), (4535, 88144), (5509, 72560), (6296, 63490), (6349, 62960), (7256, 55090), (7870, 50792), (9070, 44072), (11018, 36280), (12592, 31745), (12698, 31480), (14512, 27545), (15740, 25396), (18140, 22036)]