398475520

素因数分解:

$2^8\times 5^1\times {\mathrm{193}}^1\times {\mathrm{1613}}^1$

素因数の和:1827

約数の個数: 72

約数和(自身を含む): 960013656

約数和(自身を除く): 561538136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 193, 256, 320, 386, 640, 772, 965, 1280, 1544, 1613, 1930, 3088, 3226, 3860, 6176, 6452, 7720, 8065, 12352, 12904, 15440, 16130, 24704, 25808, 30880, 32260, 49408, 51616, 61760, 64520, 103232, 123520, 129040, 206464, 247040, 258080, 311309, 412928, 516160, 622618, 1032320, 1245236, 1556545, 2064640, 2490472, 3113090, 4980944, 6226180, 9961888, 12452360, 19923776, 24904720, 39847552, 49809440, 79695104, 99618880, 199237760, 398475520]

約数ペア:

[(1, 398475520), (2, 199237760), (4, 99618880), (5, 79695104), (8, 49809440), (10, 39847552), (16, 24904720), (20, 19923776), (32, 12452360), (40, 9961888), (64, 6226180), (80, 4980944), (128, 3113090), (160, 2490472), (193, 2064640), (256, 1556545), (320, 1245236), (386, 1032320), (640, 622618), (772, 516160), (965, 412928), (1280, 311309), (1544, 258080), (1613, 247040), (1930, 206464), (3088, 129040), (3226, 123520), (3860, 103232), (6176, 64520), (6452, 61760), (7720, 51616), (8065, 49408), (12352, 32260), (12904, 30880), (15440, 25808), (16130, 24704)]