19840400

素因数分解:

$2^4\times 5^2\times {\mathrm{193}}^1\times {\mathrm{257}}^1$

素因数の和:468

約数の個数: 60

約数和(自身を含む): 48099972

約数和(自身を除く): 28259572

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 193, 200, 257, 386, 400, 514, 772, 965, 1028, 1285, 1544, 1930, 2056, 2570, 3088, 3860, 4112, 4825, 5140, 6425, 7720, 9650, 10280, 12850, 15440, 19300, 20560, 25700, 38600, 49601, 51400, 77200, 99202, 102800, 198404, 248005, 396808, 496010, 793616, 992020, 1240025, 1984040, 2480050, 3968080, 4960100, 9920200, 19840400]

約数ペア:

[(1, 19840400), (2, 9920200), (4, 4960100), (5, 3968080), (8, 2480050), (10, 1984040), (16, 1240025), (20, 992020), (25, 793616), (40, 496010), (50, 396808), (80, 248005), (100, 198404), (193, 102800), (200, 99202), (257, 77200), (386, 51400), (400, 49601), (514, 38600), (772, 25700), (965, 20560), (1028, 19300), (1285, 15440), (1544, 12850), (1930, 10280), (2056, 9650), (2570, 7720), (3088, 6425), (3860, 5140), (4112, 4825)]