1987522516

素因数分解:

$2^2\times 7^2\times {\mathrm{10140421}}^1$

素因数の和:10140439

約数の個数: 18

約数和(自身を含む): 4046028378

約数和(自身を除く): 2058505862

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 10140421, 20280842, 40561684, 70982947, 141965894, 283931788, 496880629, 993761258, 1987522516]

約数ペア:

[(1, 1987522516), (2, 993761258), (4, 496880629), (7, 283931788), (14, 141965894), (28, 70982947), (49, 40561684), (98, 20280842), (196, 10140421)]