19420940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12611}}^1$

素因数の和:12638

約数の個数: 48

約数和(自身を含む): 50851584

約数和(自身を除く): 31430644

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, 12611, 25222, 50444, 63055, 88277, 126110, 138721, 176554, 252220, 277442, 353108, 441385, 554884, 693605, 882770, 971047, 1387210, 1765540, 1942094, 2774420, 3884188, 4855235, 9710470, 19420940]

約数ペア:

[(1, 19420940), (2, 9710470), (4, 4855235), (5, 3884188), (7, 2774420), (10, 1942094), (11, 1765540), (14, 1387210), (20, 971047), (22, 882770), (28, 693605), (35, 554884), (44, 441385), (55, 353108), (70, 277442), (77, 252220), (110, 176554), (140, 138721), (154, 126110), (220, 88277), (308, 63055), (385, 50444), (770, 25222), (1540, 12611)]