19938940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142421}}^1$

素因数の和:142437

約数の個数: 24

約数和(自身を含む): 47853792

約数和(自身を除く): 27914852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142421, 284842, 569684, 712105, 996947, 1424210, 1993894, 2848420, 3987788, 4984735, 9969470, 19938940]

約数ペア:

[(1, 19938940), (2, 9969470), (4, 4984735), (5, 3987788), (7, 2848420), (10, 1993894), (14, 1424210), (20, 996947), (28, 712105), (35, 569684), (70, 284842), (140, 142421)]