19266940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12511}}^1$

素因数の和:12538

約数の個数: 48

約数和(自身を含む): 50448384

約数和(自身を除く): 31181444

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, 12511, 25022, 50044, 62555, 87577, 125110, 137621, 175154, 250220, 275242, 350308, 437885, 550484, 688105, 875770, 963347, 1376210, 1751540, 1926694, 2752420, 3853388, 4816735, 9633470, 19266940]

約数ペア:

[(1, 19266940), (2, 9633470), (4, 4816735), (5, 3853388), (7, 2752420), (10, 1926694), (11, 1751540), (14, 1376210), (20, 963347), (22, 875770), (28, 688105), (35, 550484), (44, 437885), (55, 350308), (70, 275242), (77, 250220), (110, 175154), (140, 137621), (154, 125110), (220, 87577), (308, 62555), (385, 50044), (770, 25022), (1540, 12511)]