18962020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1759}}^1$

素因数の和:1793

約数の個数: 72

約数和(自身を含む): 50561280

約数和(自身を除く): 31599260

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1759, 2156, 2695, 3518, 5390, 7036, 8795, 10780, 12313, 17590, 19349, 24626, 35180, 38698, 49252, 61565, 77396, 86191, 96745, 123130, 135443, 172382, 193490, 246260, 270886, 344764, 386980, 430955, 541772, 677215, 861910, 948101, 1354430, 1723820, 1896202, 2708860, 3792404, 4740505, 9481010, 18962020]

約数ペア:

[(1, 18962020), (2, 9481010), (4, 4740505), (5, 3792404), (7, 2708860), (10, 1896202), (11, 1723820), (14, 1354430), (20, 948101), (22, 861910), (28, 677215), (35, 541772), (44, 430955), (49, 386980), (55, 344764), (70, 270886), (77, 246260), (98, 193490), (110, 172382), (140, 135443), (154, 123130), (196, 96745), (220, 86191), (245, 77396), (308, 61565), (385, 49252), (490, 38698), (539, 35180), (770, 24626), (980, 19349), (1078, 17590), (1540, 12313), (1759, 10780), (2156, 8795), (2695, 7036), (3518, 5390)]