19378660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1427}}^1$

素因数の和:1540

約数の個数: 48

約数和(自身を含む): 47021184

約数和(自身を除く): 27642524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1427, 1940, 2716, 2854, 3395, 5708, 6790, 7135, 9989, 13580, 14270, 19978, 28540, 39956, 49945, 99890, 138419, 199780, 276838, 553676, 692095, 968933, 1384190, 1937866, 2768380, 3875732, 4844665, 9689330, 19378660]

約数ペア:

[(1, 19378660), (2, 9689330), (4, 4844665), (5, 3875732), (7, 2768380), (10, 1937866), (14, 1384190), (20, 968933), (28, 692095), (35, 553676), (70, 276838), (97, 199780), (140, 138419), (194, 99890), (388, 49945), (485, 39956), (679, 28540), (970, 19978), (1358, 14270), (1427, 13580), (1940, 9989), (2716, 7135), (2854, 6790), (3395, 5708)]