16981580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11027}}^1$

素因数の和:11054

約数の個数: 48

約数和(自身を含む): 44464896

約数和(自身を除く): 27483316

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11027, 22054, 44108, 55135, 77189, 110270, 121297, 154378, 220540, 242594, 308756, 385945, 485188, 606485, 771890, 849079, 1212970, 1543780, 1698158, 2425940, 3396316, 4245395, 8490790, 16981580]

約数ペア:

[(1, 16981580), (2, 8490790), (4, 4245395), (5, 3396316), (7, 2425940), (10, 1698158), (11, 1543780), (14, 1212970), (20, 849079), (22, 771890), (28, 606485), (35, 485188), (44, 385945), (55, 308756), (70, 242594), (77, 220540), (110, 154378), (140, 121297), (154, 110270), (220, 77189), (308, 55135), (385, 44108), (770, 22054), (1540, 11027)]